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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.

## What is the power of a device?

The rate at which this energy is transferred is called power . So the more powerful a device is, the more energy it will transfer each second.

## What is power in an electric circuit?

The power at a circuit element is a measure of how quickly it converts energy. … We define the power P at a circuit element to be the amount of electrical energy it absorbs per second. So, power has units of joules/second (J/s), which are called watts, with symbol W.

## What is the electrical power formula?

Electrical power is the product of voltage and current. P=VXI.

## How do you calculate the power of a device?

To calculate power consumption of any appliance, you have to multiply it’s wattage by the number of hours it is being used (operational hours). For example, a 1000 watt electric iron running for one hour will consume (1000 watt X 1 hour) 1000 watt hour or 1 kilowatt hour (kWh) of electricity.

## How do you calculate power from Watts?

In other words, watt=amp X volt. Sometimes you will see this formula written as W=A X V. For example, if the current is 3 amps (3A) and the voltage is 110V, you multiply 3 by 110, to get 330W (watts). The formula is P=3A X 110V = 330 W (with P standing for power).

## What is power in simple words?

1 : possession of control, authority, or influence over others. 2 : a nation that has influence among other nations a foreign power. 3 : the ability to act or produce an effect It’s in your power to change things. 4 : the right to do something the president’s powers. 5 : physical might : strength The wind grew in power …

## What is electric power class 10th?

Rate at which electric energy is dissipated or consumed in a circuit is called Electric Power. P = VI = I^{2}R = V^{2}/R. SI unit of Power is Watt (W). 1 Watt power is consumed when 1 Ampere of current flows through a device at a potential difference of 1 Volt.

## What are the types of power in 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.

## How do you calculate current power?

The explanations here are that; Current equals Power divided by Voltage (I=P/V), Power equals Current times Voltage (P=VxI), and Voltage equals Power divided by Current (V=P/I).