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Difference Between Energy And Power

September 21, 2022
written by Adeel Abbas

The difference between energy and power is the capacity of a body to do work is referred to as energy, while the rate of work that can be done by the force is referred to as power.

What is Energy? 

Energy is the force that drives everything in our universe. Energy is measured in joules (J), kilowatt-hours (kWh), or watts (W). A watt is defined as 1 J/sec. In physics, energy is the capacity to do work. Work is any physical action that changes the state of motion of an object.

Energy is often described as the ability to do work. There are two types of energy:

Potential energy is stored energy, while kinetic energy is the energy associated with movement. Kinetic energy is always changing; however, potential energy can remain constant for long periods of time.

The four basic forms of energy are mechanical, thermal, electrical, and nuclear. Mechanical energy comes from the forces exerted by objects on each other. Thermal energy is the energy released by hot things and absorbed by cold things. Electrical energy is created when electrons move around atoms. Nuclear energy occurs when atomic nuclei split apart.

What is Power?

The amount of energy that is consumed per unit of time is known as power. The rate at which work is done is another way to think of it. When there is one force causing an object to move, work happens.

A person pressing against a brick wall is consuming energy while no work is being done and no power is created because the wall does not move. If a person pushes a table and moves it, there is work. How quickly that work is done is expressed in power. Force is one element of the power equation, along with other elements.

Power, in science and engineering, is the time rate of doing work or delivering energy, which is expressible as the amount of work done, or energy transferred, divided by the time interval


A given amount of work can be done by a low-powered motor in a long time or by a high-powered motor in a short time.

Difference Between Energy And Power

There is some difference between energy and power.

The ability of a body to do work is called energy.The rate of doing work is called power.
The SI unit of energy is the joule.The SI unit of power is the watt.
The forms of energy change from one form to another.It is impossible to transform power from one type to another.
Energy is a time quantity.
Power is an instantaneous quantity.
Kinetic energy, potential energy, and thermal energy are different types of energy.Electric power and optical power are different types of power.
Energy can be stored.Power can not be stored.

Frequently Asked Questions-FAQs

Is energy a power?

The physical quantity of energy and power is not the same as energy. The ability to cause change is referred to as energy, while the rate at which energy is moved is referred to as power.

What is the difference between energy and power Quizlet?

The difference between energy and power is that energy is the ability to do work whereas power is the amount of work done in a given period of time. The SI unit for power is Watts whilst that of power is kilowatt per hour.

What is the difference between the power and energy of a battery?

In order to operate electronic devices, energy can be produced or stored. There are batteries that hold electrical energy. The more work that can be done the more energy that is stored.