# What is electric power and electric energy Class 12?

Contents

Electric power Definition – It is the rate at which work is done or energy is transformed in an electrical circuit. … In physics, the rate of transfer of electrical energy by an electrical circuit per unit time is called electrical power. Here electrical energy can be either kinetic energy or potential energy.

## What is the difference between electric energy and electric power?

In an electrical and electronic circuit, electrical energy is defined as the capacity to do electric work. Electrical power is defined as the ‘rate of work done per unit charge’ or ‘rate of energy transfer per unit time’. Electrical energy is denoted by the W or E.

## How is electric power defined?

Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries.

## What is electric power called?

Denoted by P and measured using the SI unit of power is the watt or one joule per second. Electric power is commonly supplied by sources such as electric batteries and produced by electric generators.

Electric Power Definition.

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Symbol P
Scalar or Vector Scalar Quantity
Formula P=VI

## What is electric power answer?

Electric power is the rate at which a device changes electric current to another form of energy. The SI unit of power is the watt. Electric power can be calculated as the current times’ voltage. 3.Electrical energy use is typically expressed in kilowatt-hours. 4.

## What is electrical energy Class 10?

Electrical energy is the amount of work done or energy consumed in a given amount of time. So, it is measured in Joules or Wh (watt hour) or most commonly as kWh (Kilowatt hour).

## What is the definition of electrical energy in science?

Electrical energy is the power an atom’s charged particles have to cause an action or move an object. The movement of electrons from one atom to another is what results in electrical energy. … Examples of this kind of energy are also seen in electric eels, lightning, and batteries.

## What is the SI unit of electric energy and electric power?

The SI unit of electrical energy is joule. The SI unit of electrical power is watt.

## What is electrical energy and its SI unit?

It can be measured in joules and can also be expressed as energy ‘E’. If the voltage is one volt, the current is one ampere and the time is equal to one second, then the electrical energy is equal to one joule. The SI unit of electrical energy is joule (J). … Power is the rate of energy consumed and its SI unit is watt.

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## What is electrical power and types?

Electric power is classified into two types of electric power and they are: DC power: It is defined as the product of voltage and current and is produced by the generator, battery, and fuel cell. … AC power: There are three types of AC power and they are: Apparent power: It is the ideal power and is represented by S.

## What unit is electrical energy?

A unit of electrical energy, particularly for utility bills, is the kilowatt-hour (kWh); one kilowatt-hour is equivalent to 3.6 megajoule. Electricity usage is often given in units of kilowatt-hours per year or other time period.

## What is electrical power quizlet?

Electrical power is the rate of change of electrical energy. In other words, electrical power is the amount of electrical energy that is changed into other forms of energy each second.