NCERT Exemplar Class 10 Science Solutions Chapter 13 Magnetic Effects of Electric Current
Let us explore a thrilling idea! This chapter describes how a magnetic effect can be generated by electricity passing through wires and resembles natural magnets. Major concepts of electromagnetism are outlined clearly in Chapter 13, and question solving is easier and more efficient.
This Story also Contains
- NCERT Exemplar Class 10 Science Solutions Chapter 13-MCQ
- NCERT Exemplar Class 10 Science Solutions Chapter 13-Short Answer
- NCERT Exemplar Class 10 Science Solutions Chapter 13-Long Answer
- NCERT Exemplar Class 10 Science Solutions Chapter 13: Important Concepts and Formulas
- Advantages of NCERT Exemplar Class 10 Science Chapter 13: Magnetic Effects of Electric Current
- NCERT Class 10 Science Exemplar Solutions for Other Chapters
- Features of NCERT Exemplar Class 10 Science Solutions Chapter 13 - Magnetic Effects of Electric Current:
The NCERT Exemplar Class 10 Science Solutions Chapter 13 Magnetic Effects of Electric Current assist you in realising that not only natural magnets can generate magnetism, but also current-carrying conductors. These NCERT Exemplar solutions, prepared by experts, give the exact and brief answers to all the questions so that any student can understand all the aspects of the topic. The syllabus of CBSE Class 10 Science is adhered to with a lot of care in NCERT Exemplar Class 10 Solutions Science Chapter 13 Magnetic Effects of Electric Current, and all the necessary concepts of Chapter 13 are covered, and you gain confidence to solve questions in the exams and score above average.
NCERT Exemplar Class 10 Science Solutions Chapter 13-MCQ
The NCERT Exemplar Class 10 Science Chapter 13 MCQs serve to make the students assess their comprehension of the magnetic impact of electric current. These objective questions include such important concepts as magnetic fields, electromagnets and the use of the left-hand rule by Fleming. Their use will enhance problem-solving and equip students with questions that are at the exam level.
1. Choose the incorrect statement from the following regarding magnetic lines of field
(a) The direction of magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points
(b) Magnetic field lines are closed curves
(c) If magnetic field lines are parallel and equidistant, they represent zero field strength
(d) Relative strength of magnetic field is shown by the degree of closeness of the field lines
Magnetic field lines are imaginary lines which are used to represent magnetic field strength and its direction in space.
The closeness of magnetic field lines represents the magnetic field strength.
The direction of magnetic field strength at any point is along the direction of the magnetic field line.
At any point, direction can be deduced by using a magnetic needle; the North Pole of the magnetic needle will be in the direction of the magnetic field line.
These magnetic field lines form a closed loop.
If magnetic field lines are drawn equidistant and parallel to each other, it represents a uniform magnetic field.
Hence, the correct option of this question his option c
2. If the key in the arrangement (Figure 13.1) is taken out (the circuit is made open) and magnetic field lines are drawn over the horizontal plane ABCD, the lines are
(a) Concentric circles
(b) Elliptical in shape
(c) Straight lines parallel to each other
(d) Concentric circles near the point O but of elliptical shapes as we go away from it
If the key is open, there will be no current in the wire, and it will not create any magnetic field.
In that case, the magnetic field present will be because of the Earth only.
Therefore, magnetic field lines will be straight lines parallel to each other.
Hence, the correct option is option c.
3. A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anticlockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to
(a) A
(b) B
(c) A if the current is small, and B if the current is large
(d) B if the current is small and A if the current is large
The magnetic field lines form a closed loop, but if we see any magnet, then the magnetic field lines seem to originate from the North Pole.
Within the magnet, the magnetic field lines will be from the South Pole to the North Pole.
As in this question, the magnetic field lines point from B to A. It means for the outside world, it is coming out from A.
Hence, point A will be the North Pole and point B will be the South Pole.
The nature of the face, whether it will be the South Pole or the North Pole, depends on the sense of current in the loop. This nature
does not depend on the magnitude of the current.
Hence, the correct option for this question is option a
4. For a current in a long straight solenoid, N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is
(a) The field lines inside the solenoid are in the form of straight lines, which indicates that the magnetic field is the same at all points inside the solenoid
(b) The strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil
(c) The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet
(d) The N- and S-poles exchange position when the direction of current through the solenoid is reversed
A solenoid is a similar arrangement to a bar magnet, and it is known as an electromagnet.
Its magnetic field line will be similar to any naturally found bar magnet.
Inside the long solenoid magnetic field is approximately uniform at every point.
Therefore, magnetic field lines inside the solenoid are drawn in the form of parallel straight lines.
The two ends of the solenoid can be the North or South Pole, depending on the sense of current or direction of current.
Hence, the correct option for this question is option c
5. A uniform magnetic field exists in the plane of paper pointing from left to right as shown in Figure 13.3. In the field an electron and a proton move as shown. The electron and the proton experience
(a) forces both pointing into the plane of paper
(b) forces both pointing out of the plane of paper
(c) forces pointing into the plane of paper and out of the plane of paper, respectively
(d) force pointing opposite and along the direction of the uniform magnetic field respectively
We know that the direction of current will be in the direction of positive charge flow.
As the electron is coming downward, we can assume the corresponding current will be moving upward.
Similarly, the motion of a proton in the upward direction will cause a corresponding current in the upward direction.
Hence, both particles will have the same current in the same direction, which is upward.
By using Fleming's left-hand rule, we can say that the force on the proton as well as the electron will be in the direction into the plane of the paper.
Therefore correct option for this question is option a
6. Commercial electric motors do not use
(a) an electromagnet to rotate the armature
(b) effectively large number of turns of conducting wire in the current carrying coil
(c) a permanent magnet to rotate the armature
(d) a soft iron core on which the coil is wound
Commercial electric motors use a solenoid to rotate the armature.
This solenoid is also known as an electromagnet.
This is made by whirling a large number of wire turns on a soft iron core to create a strong magnetic field.
Hence, the correct option for this question is option c
7. In the arrangement shown in Figure 13.4 there are two coils wound on a non-conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed. Then
(a) the deflection in the galvanometer remains zero throughout
(b) there is a momentary deflection in the galvanometer but it dies out shortly and there is no effect when the key is removed
(c) there are momentary galvanometer deflections that die out shortly; the deflections are in the same direction
(d) there are momentary galvanometer deflections that die out shortly; the deflections are in opposite directions
A changing magnetic field can cause current in any loop.
We know a magnetic field can be created by a current-carrying wire.
Therefore, we can see that changing the current in one Loop can cause current in another loop.
This effect is known as the mutual electromagnetic inductive effect.
As the key is inserted, the current becomes non-zero from zero, which will cause current in the second loop.
When the key is removed later, the current becomes zero from non-zero, which will again cause current in the second loop.
The direction of current in the second loop will be opposite to that in both cases, as suggested by Fleming's right-hand rule
Hence, the correct answer to this question is option d
8. Choose the incorrect statement
(a) Fleming’s right-hand rule is a simple rule to know the direction of induced current
(b) The right-hand thumb rule is used to find the direction of magnetic fields due to current carrying conductors
(c) The difference between the direct and alternating currents is that the direct current always flows in one direction, whereas the alternating current reverses its direction periodically
(d) In India, the AC changes direction every 50 seconds
Fleming’s right-hand rule is used to find out direction of the induced current.
Fleming’s left-hand rule is used to find the force on a current-carrying wire in a magnetic field.
The right-hand thumb rule is used to find the direction of the magnetic field created by a current-carrying wire.
A direct current source or DC source will cause current in the same direction all the time.
Alternating-current source or AC source will cause a periodic change in the direction of current.
The alternating current coming to our houses in India has a frequency of 50 Hz.
In one cycle direction of current changes twice to become the same.
We can say that the direction of the current changes after every half cycle.
Therefore, the time to change the direction will be half of the time period, which would be 1/100 seconds.
Hence, the correct option for this question is option d
9. A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure 13.5. The direction of magnetic field at a point will be North to South
(a) directly above the wire
(b) directly below the wire
(c) at a point located in the plane of the paper, on the north side of the wire
(d) at a point located in the plane of the paper, on the south side of the wire
We can use the right-hand thumb rule to find out the magnetic field due to a current-carrying wire.
The magnetic field will form a closed loop, and if we see it from the East, the loop will be clockwise.
At a point above the wire, the direction of the magnetic field will be towards North from south and at a point below the wire, the magnetic field will be towards south from North.
At a point located towards the north, the magnetic field will be into the paper. At a point located towards the south, the magnetic field will be out of the paper. Hence, the correct option is option b
10. The strength of magnetic field inside a long current-carrying straight solenoid is
(a) more at the ends than at the centre
(b) minimum in the middle
(c) same at all points
(d) found to increase from one end to the other
For a long current-carrying straight solenoid, the magnetic field is approximately uniform at every point inside the solenoid.
So if we draw the magnetic field lines, that would be a parallel straight line with equal gaps.
Hence, the correct answer to this question is option c
11.To convert an AC generator into DC generator
(a) split-ring type commutator must be used
(b) slip rings and brushes must be used
(c) a stronger magnetic field has to be used
(d) a rectangular wire loop has to be used
To get a direct current from an AC source or convert an AC source into a DC source, we have to use a split-ring type commutator.
The split-ring commutator is also used in electric motors.
This commutator guarantees unidirectional current in the circuit.
Hence, option a is the correct option for this question
12. The most important safety method used for protecting home appliances from short circuiting or overloading is
(a) earthing
(b) use of fuse
(c) use of stabilizers
(d) use of electric meter
Fuse wire is a short length of thin wire generally made of tin and lead in the ratio of 3:1.
If the supply becomes high-voltage, which exceeds the current, then after reaching a specified value of current, the fuse wire melts and breaks.
As the fuse wire melts, the circuit of the whole household breaks and thus household appliances are protected from damage.
Hence, the correct answer to this question is option b.
NCERT Exemplar Class 10 Science Solutions Chapter 13-Short Answer
NCERT Exemplar Class 10 Science Chapter 13 short-answer questions assist the students in putting into practice the concept of magnetic effects of electric current in real life. The NCERT Exemplar Class 10 Science Solutions Chapter 13 are clear and concise, allowing students to develop good conceptual knowledge and increase accuracy in answering exam-level questions.
Answer:
By using the right-hand thumb rule, we can find out the direction of the magnetic field due to a current-carrying wire. These field lines form a circle in a plane perpendicular to the wire.In the given case, if we keep the wire in the plane of the paper, it will cause a magnetic field perpendicular to the plane.
The field will be parallel to the vertical axis of the compass needle. As a result, there will be no change in the deflection of the compass needle.
The deflection is maximum when the wire passes through point A is perpendicular to the plane of the paper. In that case, the field is parallel to the plane of the paper
Answer:
A permanent electromagnet is a special case of a solenoid.This solenoid is also known as an electromagnet.
This is made by whirling a large number of wire turns on a soft iron core to create a strong magnetic field
In this case, the current-carrying long solenoid will have a soft iron core within itself.
Therefore, we can say, “To obtain a permanent electromagnet, we need a Soft iron core and current in a tightly wound solenoid.”
Soft iron core attracts magnetic field lines, hence it causes closeness in the lines within the solenoid.
Under what conditions permanent electromagnet be obtained if a current-carrying solenoid is used? Support your answer with the help of a labelled circuit diagram.
Answer:
By using the right-hand thumb rule, we can find out the direction of the magnetic field due to a current-carrying wire.In the given diagram, the magnetic field lines will form a closed circular loop.
By keeping the thumb along the current-carrying wire, the direction can be deduced, and it will be anticlockwise if we see it from above.
Therefore, the magnetic field at point B will be into the plane of the paper and at point Q, it will be outside the plane of the paper.
As we go away from the wire, the magnetic field strength decreases in magnitude. Hence magnetic field strength will be stronger at point B and relatively weaker at point Q.
Answer:
If the current is increased in the conductor, the deflection of the compass needle increases. This happens because the strength of the magnetic field varies directly as the magnitude of the electric current or the current passing through the wire.Answer:
(i) A current-carrying wire can be treated as the motion of positive charge particles along the wire in the direction of current.Therefore, we can say that any moving charged particles or beam can be considered as a current-carrying wire.
An alpha particle is a positively charged particle and has a charge equal to 2 protons.
Its beam can be considered as a current-carrying wire. Therefore, it will cause a magnetic field around it.
(ii) A neutron is an uncharged neutral particle, hence the magnetic field will not be created because of the beam of neutrons.
Answer:
The right-hand thumb rule is used to find out the magnetic field due to a current-carrying wire in the vicinity of the wire.The Thumb must be along the current-carrying wire, and fingers are curled in the direction of the magnetic field produced by this wire.
While Fleming’s left-hand rule is used to find out the force on a current-carrying wire, present in a magnetic field.
Answer:
The closeness of the magnetic field represents the magnetic field strength.As we go away from the current-carrying wire, the strength of the magnetic field decreases.
This decrement of the magnetic field can be shown as a decrease in the closeness of the line of magnetic fields.
Answer:
For a practical length solenoid, the magnetic field strength is weaker at the ends and stronger within the solenoid.Hence, if we draw magnetic field lines, the degree of closeness will be maximum within the solenoid, and it decreases as we go towards the end.
This can be shown as the divergence of magnetic field lines near the ends of a current-carrying solenoid
Answer:
An electric motor is a device which converts electrical energy into mechanical energy.The current in the armature experiences a force due to the magnetic field and causes the armature to rotate.
The electric motor is used in all such devices, in which we have to rotate any part of the device, such as washing machines, electric fans, mixers and computer drives.
The electric generator uses mechanical power to create electrical energy. Hence, generators can be assumed as exactly opposite devices of an electric motor
22. What is the role of the two conducting stationary brushes in a simple electric motor?
Answer:
We need two conducting stationary Brushes to create contact between the two parts of the split rings and the electric source (Battery).These Brushes work as connecting wires.
Current in the coil enters from the source battery through one conducting brush and flows back to the battery through another brush.
Answer:
In direct current, the direction of current remainsthe same at all time. The source of direct current is also known as a DC source. Example: batteryIn an alternating current source, the direction of current changes periodically.
In one cycle direction of current changes twice to get the same direction.
The time period of this cycle is different for different countries as per their convention and guidelines.
The frequency of AC in India is 50 Hz, and in each cycle, it alternates direction twice. Therefore, AC changes direction 2 X 50 =100 times in one second.
Answer:
Fuse wire is a short length of thin wire generally made of tin and lead in the ratio of 3:1.If the supply becomes high-voltage, which exceeds the curren,t then after reaching a specified value of current, the fuse wire melts and breaks.
As the fuse wire melts, the circuit of the whole household breaks and thus
household appliances get protected from damage.
Fuse wire comes with a current rating, and it melts for any current more than that.
If we use a high current rating fuse, it will allow a large current, and home appliances can get damaged by it.
NCERT Exemplar Class 10 Science Solutions Chapter 13-Long Answer
Magnetic Effects of Electric Current Class 10 NCERT Exemplar has long answer questions that enable students to understand concepts in detail with diagrams and appropriate explanation. These NCERT Exemplar Class 10 Science Chapter 13 Solutions are used to increase analytical skills and aid in full preparation of exams. These solution gives confidence in high-scoring descriptive answers.
Answer:
Due to the churning of Earth's core metals, Earth creates a magnetic field around itself.This effect is called the dynamo effect.
Due to the magnetic field of Earth, any magnetic compass gets deflected and tries to align itself pointing North and South.
When a bar magnet or current-carrying wire comes close to the magnetic needle, the net magnetic field strength, which is the combination of the magnetic field due to the earth and the current-carrying wire, changes. This new magnetic field deflects the magnetic needle in a different direction, which will be along the resultant magnetic field lines.
In the absence of a bar magnet or current-carrying wire, the magnetic field strength due to Earth can be considered uniform at a particular place. The magnetic field lines will be straight and parallel to each other. In the presence of a bar magnet or a current-carrying wire, the magnetic field lines get distorted.
Magnetic Field Line (Features):
Magnetic field lines are imaginary lines which are used to represent magnetic field strength and its direction in space.
The closeness of magnetic field lines represents the magnetic field strength.
The direction of magnetic field strength at any point is along the direction of the magnetic field line.
At any point, direction can be deduced by using a magnetic needle; the North Pole of the magnetic needle will be in the direction of the magnetic field line.
These magnetic field lines form a closed loop.
If magnetic field lines are drawn equidistant and parallel to each other, it represents a uniform magnetic field.
Answer:
A labelled circuit diagram illustrates the pattern of field lines of the magnetic field around a current-carrying straight, long conducting wire:
Concentric magnetic field lines will be produced when current passes through the conductor. As we move away from the wire, the strength of the magnetic field keeps decreasing.
We can use the right-hand thumb rule to find the direction of the magnetic field.
It states that if a current-carrying conductor is held by our right hand (keeping the thumb straight) and if the direction of the electric current is in the direction of the thumb, then the direction of the magnetic field will be given by the direction of wrapping of the other fingers. This is shown as follows:
Answer:
The magnetic field pattern due to a circular coil is as shown in the figure below:
The concentric circles represent the magnetic field around the circular coil.
For every point on the circular loop, as we move away from the wire, the concentric circles around it become larger and larger. At the centre of the loop, the field appears as a straight line.
The magnetic field produced by a current-carrying circular wire at a given point is directly proportional to the current flowing through the wire and the number of turns of the wire.
If a current-carrying coil has n turns, the current in each circular turn has the same direction. So, the field due to each turn adds up, and the field produced at any point is n times as large as that produced by a single turn.
Answer:
Here we have a small aluminium rod AB. It is suspended horizontally from a stand, using two connecting wires.A strong horseshoe magnet is placed in such a way that the rod lies between the two poles with the magnetic field directed upwards.
The North Pole of the magnet lies vertically below, and the South Pole lies vertically above the aluminium rod.
The rod is connected in series with a battery, a key and a rheostat.
The arrangement looks as follows:
Now, if we pass a current through the aluminium rod from end B to end A, we observe that the rod is displaced towards the left.
If we reverse the direction of the current, we observe that the direction of its displacement is now towards the right. This is explained using Fleming’s left-hand rule. It states that:
Stretch your thumb, forefinger and central finger of your left hand such that they are mutually perpendicular. If the forefinger points in the direction of the magnetic field and the central finger points in the direction of the current, then the thumb will point in the
direction of motion or force acting on the conductor.
Answer:
The circuit diagram of a simple electric motor is as follows:
An AC motor is a device which converts electrical energy into mechanical energy.
It can be seen as a reverse mechanism of an AC generator.
With the help of an electrical source like a battery, the current in any armature is
controlled. This armature is exposed to a strong magnetic field between permanent magnetic poles.
In a magnetic field, the wires of the armature experience a force which causes them to rotate.
With the help of a split-ring commutator, the direction of current changes in a half period. Thus force on the armature keeps rotating it in the same sense.
The commercial motor is more powerful than a regular electric motor.
To make it more powerful, commercial motor uses electromagnets in place of permanent magnets.
These electromagnets are way stronger than permanent magnets because of the large number of windings and the soft iron core.
Answer:
When a magnetic field passes through any coil changes it causes an electromagnetic force in the coil.This electromagnetic force produces current in the coil. This phenomenon is called electromagnetic induction.
Whether the magnetic field through the coil is increasing or decreasing, it will cause an induced current in the coil.
The sense of current will be different for a decreasing or increasing magnetic field.
In the given diagram, if we switch on the circuit of the left coil, the current in the left coil will increase.
We know that current current-carrying wire produces a magnetic field, therefore the magnetic field due to the left coil will increase and cause an induced current in the right coil.
Similarly, if we open the switch of the left circuit, the magnetic field decreases because of it.
This change will again cause the induced current in the right coil.
But this time direction of the current will be reversed.
This experiment clearly demonstrates that whether the magnetic field decreases or increases through any coil, it will cause an induced current.
Answer:
AC generator works on the principle of electromagnetic induction.With the help of a motor, the armature is rotated between two fixed permanent magnetic poles.
As the armature experiences the changing magnetic field due to its rotation, an electromotive force is generated.
The polarity of this electromotive force changes periodically depending on the angular speed of the armature.
In this way, the generator creates an alternating current source.
Therefore, we can say an AC generator is a device which converts mechanical energy into electrical energy.
If we want to use this AC generator as the DC source, we have to use half split rings.
This split ring commutator changes the direction of current in a half period, thus the output current will have the same direction
all the time
Answer:
Schematic diagram showing common domestic circuits:
Supply from the power distribution system first goes through a fuse wire, then it goes to the meter, which calculates electricity usage.
After passing through the meter, the wires go to a distribution box, which has fuses for four different circuits corresponding to different loads in households.
Fuse wire is a short length of thin wire generally made of tin and lead in the ratio of 3:1.
If the supply becomes high-voltage, which exceeds the current, then after reaching a specified value of current, the fuse wire melts and breaks.
As the fuse wire melts, the circuit of the whole household breaks and thus household appliances are protected from damage.
Fuse wire comes with a current rating, and it melts for any current more than that.
If we use a high current rating fuse, it will allow a large current, and home appliances can get damaged by it.
NCERT Exemplar Class 10 Science Solutions Chapter 13: Important Concepts and Formulas
Electric current produces magnetic effects, and it is important to understand how this is possible in order to study electromagnetism. Some of the major principles discussed in Magnetic Effects of Electric Current Class 10 NCERT Exemplar include magnetic field, magnetic field lines, Fleming's rules, electromagnets and electric motors. Those ideas allow the students to imagine the activity of electricity and magnetism at work in real-life devices.
Important Concepts
1. Magnetic Field: The region around a magnet or a current-carrying conductor where magnetic force can be experienced.
2. Magnetic Field Lines: Imaginary lines around a magnet showing the direction and strength of a magnetic field. They move from the north pole to the south pole outside the magnet.
3. Right-Hand Thumb Rule: If you hold a wire carrying current in your right hand such that the thumb points in the direction of the current, the curled fingers show the direction of the magnetic field.
4. Electromagnet: A temporary magnet created when current flows through a coil wrapped around a magnetic material like soft iron.
5. Fleming’s Left-Hand Rule: Used to find the direction of motion (force) in electric motors when the direction of current and magnetic field are known.
6. Electromagnetic Induction: When a changing magnetic field produces an electric current in a conductor.
Important Formulas:
1. Magnetic Field Due to Straight Current-Carrying Conductor:
$B \propto \frac{I}{r}$ — Magnetic field increases with current ( I ) and decreases as distance ( r ) increases.
2. Magnetic Field at Centre of a Circular Loop:
$B \propto \frac{I}{R}$ — Larger current gives stronger field; larger radius gives weaker field.
3. Force on Current-Carrying Conductor in Magnetic Field:
$
F=B I L
$
Where:
$F=$ force,
$B=$ magnetic field strength,
$I=$ current,
$L=$ length of wire.
Advantages of NCERT Exemplar Class 10 Science Chapter 13: Magnetic Effects of Electric Current
The NCERT Exemplar Class 10 Science Solutions Chapter 13 ensures that the students have a clear idea of the relationship between electricity and magnetism. These NCERT Exemplar Class 10 Science Solutions Chapter 13 make complex concepts easier to understand, and students build their basics, learn to solve problems, and perform better in board examinations and other competitive examinations. They also emphasise notable formula, diagram and real-life practice in order to guarantee complete learning.
- Improves the understanding of concepts by presenting the concept of magnetic fields, current-carrying conductors and electromagnets in an easy way.
- Gives step-by-step answers to multiple-choice, short-answer and long-answer questions to practice in detail.
- Contains key formulas, laws and definitions, which help revise fast, prior to exams.
- Develops problem-solving proficiencies through delivering a range of numerical and conceptual questions.
- Prepares students well in CBSE board examinations, NTSE and other competitive exams.
- Shows real-world examples of the use of magnetic effects and makes the study more life-like and interesting.
- Reduces time in the revision process by listing all the important points, concepts and formulas at a single location.
- Enhances accuracy and confidence level in answering various forms of questions under examination conditions.
NCERT Class 10 Exemplar Solutions for Other Subjects:
NCERT Class 10 Science Exemplar Solutions for Other Chapters
NCERT Class 10 Science Exemplar Solutions provide chapter-wise practice material to help students strengthen concepts and improve problem-solving skills. These are well-answered questions, and they are in accordance with the CBSE 10 syllabus, which is of good use in preparation for board exams. Students are able to get answers to other chapters easily and go over significant concepts efficiently.
Features of NCERT Exemplar Class 10 Science Solutions Chapter 13 - Magnetic Effects of Electric Current:
These NCERT Exemplar Class 10 Science Chapter 13 solutions will help you understand the magnetic effects of electric current. We’ve all seen magnets and know about their north and south poles. In this chapter, you’ll learn that not only natural magnets but also current-carrying wires can create magnetic fields! Use these detailed solutions to get a better grip on practice questions related to this topic.
The solutions are a great way to build a strong understanding of magnetic effects and will help you solve problems from other books like S. Chand by Lakhmir Singh and Manjit Kaur, NCERT Class 10 Science books, and Physics question banks.
An exciting feature is the PDF download option for these solutions. This lets you have the solutions offline while practicing, so you can easily refer to them anytime when you’re working on problems from Chapter 13!
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Frequently Asked Questions (FAQs)
Q: Are these solutions suitable for competitive exams like NSTSE?
A:
Yes, because they strengthen conceptual understanding, they are useful for NSTSE, Olympiads, and other entrance tests.
Q: What is Fleming's Left-Hand Rule?
A:
Fleming’s Left-Hand Rule helps us understand the direction of force on a current-carrying conductor in a magnetic field. It’s used for electric motors, and the thumb, index, and middle fingers point to the direction of motion, current, and magnetic field, respectively.
Q: How are NCERT Exemplar solutions helpful for Chapter 13?
A:
They provide detailed, well-explained answers that help students understand the concepts thoroughly and improve their accuracy in solving numerical and theoretical questions.
Q: What is Fleming's Right-Hand Rule?
A:
Fleming’s Right-Hand Rule helps us find the direction of the induced current when a conductor moves in a magnetic field. The thumb, index, and middle fingers represent the direction of motion, magnetic field, and current, respectively.
Q: How does Earth behave like a magnet?
A:
The Earth behaves like a giant bar magnet with a north pole and a south pole, creating a magnetic field around it. This is why compasses point to the north — they align with the Earth's magnetic field.
Q: What is an electric motor?
A:
An electric motor is a device that converts electrical energy into mechanical energy (movement). It works using the interaction between the magnetic field and the current-carrying wire.
Q: What is an electric generator?
A:
An electric generator converts mechanical energy into electrical energy. It works by moving a conductor through a magnetic field, which induces an electric current.
Q: What is electromagnetic induction?
A:
Electromagnetic induction is the process of generating an electric current by changing the magnetic field around a conductor. It’s the principle behind how electricity is generated in power plants.
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Solving question papers is one of the best method of preparation. It gives you proper idea about the exam pattern and important topics to cover.
Here is the link attached from the official website of Careers360 which will provide you with the CBSE Sahodaya question papers. Hope it helps!
https://school.careers360.com/articles/sahodaya-question-paper-2025
thank you!
The CBSE Class 10 Hindi Question Paper Blueprint (Marking Pattern) for the 2025-2026 Board Exam is divided into four main sections, with a total of 80 marks for the written exam. The structure is slightly different for Hindi Course A and Hindi Course B.You can download the official Sample Question Paper (SQP) and its Marking Scheme for both Hindi Course A and Course B here: https://school.careers360.com/boards/cbse/cbse-class-10-hindi-sample-papers-2025-26
The CBSE Sahodaya Question Papers for Class 10 (2025-26) are not released centrally by the board as a single PDF.
Here is the essential information you need:
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Local Release: The papers are designed and released by the individual Sahodaya School Clusters (groups of CBSE schools) just before or during the pre-board exam dates (typically held in December and January). Therefore, you must check your local cluster's portal or directly with your school administration.
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Best Practice: The official model papers, based on the full 2026 syllabus, are the most reliable tool for practice. These accurately reflect the structure, format, and competency-based questions used in the Sahodaya exams.
You can download the latest CBSE Class 10 Model Papers to simulate the Sahodaya tests here: https://school.careers360.com/articles/sahodaya-question-paper-2025 . Focus on that pattern
Popular CBSE Class 10th Questions
A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is
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An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range
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A particle is projected at 600 to the horizontal with a kinetic energy . The kinetic energy at the highest point
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In the reaction,
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How many moles of magnesium phosphate, will contain 0.25 mole of oxygen atoms?
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0.02 |
Option 2)
3.125 × 10-2 |
| Option 3)
1.25 × 10-2 |
Option 4)
2.5 × 10-2 |
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