Have you ever asked yourself why you stick a balloon to your hair after rubbing or why there is a flash all over the sky during a thunderstorm? In fact, all of these interesting events are because of Electric Force. In this article, we will discuss what is electric force, its S.I. unit, and calculation by using Coulomb’s law, with some real-life examples.
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Electric Force Definition:
Forces that results from an interaction of electric charges that can be either attractive or repulsive is called as an Electric Force.
Simply we can say that Electric force is the force exerted between two electrically charged objects. This force is a vector quantity, meaning it has both magnitude and direction. The direction of the electric force depends on whether the charges are alike (repulsive force) or different (attractive force).
The SI unit of electric force is the Newton (N).
The electric force is described by Coulomb's Law, which states that the magnitude of the force
where:
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Electric Force is calculated by using Coulomb's law as stated above.
1. Identify the charges: Determine the values of
2. Find the distance: Find the distance
3. Put in the values: Substitute the values of
4. Solve for
The following are the electric force examples
Force that occurs between two charged objects that are at rest (stationary), is called as Electrostatic Force. Electrostatic Force follows Coulomb's law.
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Examples of Electrostatic Force In Our Daily Life
There are a lot of examples of electrostatic force in our daily life. Some of them are mentioned below.
Q1. Find the Electric Force between two protons.
Solution.
where:
1. Square the charge
2. Square the distance
3. Substitute these values into Coulomb's Law:
4. Simplify the calculation:
5. Final calculation:
Q2. What is the magnitude of the force that a 25μC charge exerts on a −10μC charge placed at a distance of 8.5cm ?
Solution:
where:
1. Substitute the values:
2. Calculate the product of charges:
3. Square the distance:
4. Substitute these values back:
5. Calculate the division:
6. Final multiplication:
NOTE: The negative sign in the electric force indicates that the forces between the given two-particle are attractive in nature.
There are a lot of examples of electrostatic force in our daily life. Few of them are mentioned below.
Nylon Rubbing
Charged Comb
Doorknob
Woollen Clothes
Television screen
Photocopier
Application of Electrostatic forces are as follows:-
Photocopier
Laser printers
Ink-jet printers
Electrostatic-air filters
Electric Force Defination : It is the attractive or the repulsive force of interaction between any charged particles or objects. The effect of this force, like any other force, is determined by Newton’s laws of motion.
The Electrostatic Force Formula is described by coulomb’s law,
It is given by,
F= kq1q2 / r2
Newton(N) is the SI unit of Electric Force.
It is a form of energy that obtained from the charged particles.
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