How Many Joules is Equal to 1 Kilowatt Hour

Introduction

Kilowatt-hour is a unit of measurement for the term “ power” used in physics. This measurement is used to measure energy. This unit is mainly used to measure electrical power usage. The symbol for this unit is kWh. One kilowatt hour of energy equals one kilowatt of power used in one hour. Another question is if the 1-kilowatt hour is equal to how many joules. One kilowatt hour is equal to 36 megajoules or 3600 kilojoules. It is used in bills by electric utility companies. A kilowatt is a unit of power. A kilowatt-hour is a unit used for energy. The kilowatt hour is the unit that measures how much energy you use at home or in your office. It tells you how much electricity, or power, you are using and how much it costs. The cost of a kilowatt hour will depend on what time of day and where you live.

Kilowatt Hour Formula

Generally, energy is equal to power times time. That is, if energy is E, power is P, and time is t, then energy.

E=P \times t

For us to get E in kilowatt-hours, P should be in kilowatts, and t should be an hour. Therefore, a kilowatt hour equals the power in kilowatt times time in hours.

P \text { in kilowatt }\times t \text { in hours }

Or the more standard equation is power in watts times time in hours whole divided by thousand.

\frac{P \text { (watts) } \times t \text { (hours) }}{1000}

One Kilowatt Hour In Joules

One kilowatt hour is the energy equal to the power of one kilowatt consumed in one hour. That is one kilowatt multiplied by one hour, equal to one kWh. One kWh is 10000 Joules per second, and one hour is 3600 seconds. That is,

\begin{aligned}

1 \mathrm{kWh} &=1000 \mathrm{~J} / \mathrm{sec} \times 3600 \mathrm{sec} \

&=1000 \times 3600 \mathrm{~J} \

&=3600000 \mathrm{~J}

\end{aligned}

Therefore, One-kilowatt hour is 3600000 joules.

Watt

Watt is a unit of power. It indicates the power of a device. It was named after James Watt, who was a Scottish inventor. The SI multiples of watts include attowatt, nanowatt, femtowatt, picowatt, microwatt, kilowatt, megawatt, milliwatt, etc. one kilowatt is equal to 1000 watts or 1000 J/s.

Power

Power is the amount of energy transferred from one system to another or converted from one form to another per unit of time. The SI unit of power is Watt (W). one horsepower equals 735.5 watts. The formula for power is P = VI, where P is the power, V is the potential difference between 2 points, and I is the electric current.

Energy

According to scientists, energy is the ability to do work. The SI unit of energy is Joules (J). Energy can only be converted from one form to another. It can neither be created nor destroyed. This is the law of conservation of energy. While converting energy from one form to another, energy loss usually occurs. Different forms of energy include thermal energy, kinetic energy, potential energy, chemical energy, nuclear energy, electrical energy, etc.

Hour

Hour is a unit of time. One hour is equal to 60 minutes. One minute is equal to 60 seconds. hence there are 3600 seconds in one hour.

Examples Using Kilowatt Hour

1. Imagine you have a 60-watt bulb that has been working for 24 hours. To find out how much kilowatt hour of energy it has used, we simply multiply 60 and 24. Then divide the answer by 1000.

That is 60 multiplied by 24 is 1440. 1440 divided by 1000 is 1.44. Therefore, the answer is 1.44 kWh.

\begin{aligned}

&\text { Power = } 60 \mathrm{~W} \

&\text { Time = } 24 \mathrm{hrs} \

&\text { Energy }=\frac{60 \times 24}{1000} \

&=\frac{1440}{1000} \

&=1.44 \mathrm{kWh}

\end{aligned}

2. How much energy would it consume if a single 100-Watt bulb worked for 10 hours? Here the power is 100 watts, and the time is 10 hours. So energy consumed is 100 times 10 whole divided by 1000, which gives us 1 kWh.

\begin{aligned}

&\text { Power = } 100 \mathrm{~W} \

&\text { Time = } 10 \mathrm{hrs} \

&\text { Energy }=\frac{100 \times 10}{1000} \

&=\frac{1000}{1000} \

&=1 \mathrm{kWh}

\end{aligned}