# Energy transformed

## What is Energy transformed?

The potential difference between two points is the energy transferred per unit charge. An electrical circuit is an energy transformation device. Energy is provided to the circuit by an electrochemical cell, battery, generator or other another electrical energy source. Energy is delivered by the circuit. The rate at which this energy transformation takes place has a great relevance to design electrical circuits for useful functions.

## Energy transformed equation

To calculate Energy transformed we write the equations like this.

Energy = power x time

${\mathit E \, \text = \mathit P \mathit t}$

Energy = charge flow x potential difference

${\mathit E \, \text = \mathit Q \mathit V}$

## Energy transformed demo

In this tutorial you will learn how to calculate the energy transformed through an electrical circuit.

## Chilled practice question

Calculate the energy transformed if a circuit is supplied with 6 V and 32 C of charge flows.

## Frozen practice question

Calculate the energy transformed when a current of 4 A flows across a p.d of 230 V for 18 s.

## Science in context

The potential difference between two points is the energy transferred per unit charge

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