Electrical Energy and Power

Electrical Energy and Power

Energy Definition Physics or Energy Definition Science: It is the ability to do work that is called energy. The rate of doing work is called power. It can also be defined as the rate of change of energy. An object can have value for the power without doing any work.

What is electrical energy?

Electrical energy comes from the potential energy or kinetic energy of charged particles. We can define electrical energy as the energy produced by the movement of electrons from one point to another. The movement of charged particles creates current or electricity.

Electrical energy into Mechanical Energy

Electric power can be converted into other forms of energy such as heat energy, light energy, movement etc. The most popular example is:

Fan: The fan in the car converts electrical energy into mechanical energy

Light bulb: Here the electric current is converted into light energy.

Energy is measured in

Energy is a complicated topic since, depending on the application, there are several different ways to measure it. Electrical, mechanical, chemical, thermal, and nuclear energy are examples of different types of energy.

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Unit of thermal energy measured

Thermal energy refers to the temperature differences between objects as well as the heat produced when energy is converted from one form to another. The energy content of fuel is measured in British Thermal Units (BTU or Btu) on a greater scale.

Electric energy measured

The attraction and repulsion of charged particles is the basis for electrical energy. Voltage is created by the intensity of the charge and the distance between particles.

A kilowatt-hour is a unit of measurement for transformed energy.

1000watts= 1 kilowatts (measuring power)

Watt hour is unit of

A watt-hour (Wh) is an energy unit that is used to calculate the amount of work done or generated. Household appliances and other electrical gadgets conduct "work," which necessitates the usage of electricity as a source of energy.

What is electrical energy

Electrical energy definition: can be caused by kinetic energy or potential energy. It is largely due to potential energy, which is energy stored due to positions associated with charged particles or electric fields.

Symbol of electrical energy


Unit of electrical energy

Joule (J)



Formula of electrical energy

E = QV


Q is charged

V potential difference

Examples of electrical energy

Electricity prices go by telephone or electricity.



Consistent electricity.

Electric wheels produce electrical energy.

Electricity is stored in capacitors.

Audio speakers.

Door bells.

Uses of electrical energy

Lighting, cooling, heating.

Operating equipment, electronics, computers, equipment.

Public transportation plans.

What is Electric Power? Define Electric Power class 10.

Power is often defined as the degree to which a task is performed. When this is done in relation to time and the electrical circuit, it is known as electric power. Similarly, electrical energy is defined as the rate at which electricity is transferred across the electrical circuit at each time point. Electric Power is versatile - it can be generated by generators in our homes and can be supplied with batteries used in devices. Electric Power in an electric circuit is the rate at which work is done or energy is transformed into an electrical circuit.

Electric Power formula class 10 or Formula of power class 10

To calculate power, the simplest equation is that the work done is divided by time.

P = W / t

W is work done and t is time.

Definition of electrical power - The rate at which work is performed in an electrical circuit. Simply put, it is a measure of how much energy is being used over a period.



SI Unit of Electric Power

Watt, joule per second

Scale or Vector quantity

Scalar Quantity



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