Potential Difference

Key Stage 2

Voltage is how much push electricity has.

The bigger the voltage the more push the electricity has to go around the circuit.

Adding another cell to the circuit in series will increase the voltage.

With a bigger voltage a lamp will be brighter and a buzzer will be louder.


A series circuit with one cell and one bulb.	A bulb will be brighter if the voltage is higher.

Potential Difference is measured using a Voltmeter.

The units of potential difference are Volts (V).

Potential Difference is sometimes described as the 'push' that moves a current around a circuit.