# What is electrical power and its unit?

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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 electrical power and its unit class 10?

Electric power is defined as amount of electric energy consumed in a circuit per unit time. S.I. unit of power is Watt. Electricity Bill=10 units=House have consumed 10kWh electric energy.

## What is electric power and its formula?

Electric power is the rate at which energy is transferred to or from a part of an electric circuit. … By Ohm’s Law, V = IR, and so there are additional forms of the electric power formula for resistors. Power is measured in units of Watts (W), where a Watt is equal to a Joule per second (1 W = 1 J/s).

## What is electric power class 10th?

Electric Power is the rate at which electric energy is transferred by an electric circuit . The S.I. unit of power is WATT or 1 Joule Per Second.

## What is SI unit of power?

The SI unit of power is the watt (W), in honor of Scottish inventor James Watt (1736 – 1819). … One watt equals one joule per second (W = J / s).

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## What is SI unit current?

The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 ×1019 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ∆νCs.

## What is electricity formula?

Ohm’s law equation (formula): V = I × R and the power law equation (formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or intensity and R = resistance. V = voltage, electric potential difference Δ V or E = electromotive force (emf = voltage).

## What is current formula?

The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).

## What are the types of electrical power?

Types of Electrical Power

• Apparent power: It is the ideal power and is represented by S. …
• Active power: It is the power which is dissipated in the circuit. …
• Reactive power: The power which is developed in the circuit is known as reactive power and is denoted by Q and measured in volt-ampere reactive.