Electric circuits and fields > batteries

This series of experiments enables students to gain confidence in setting up their own circuits. 

An extra wire can 'shed light on the problem'.

Many interesting circuits can be set up with switches in series and in parallel with components.

Circuit diagrams allow students to make simple records. They also allow teachers to give students summaries of their instructions.

A voltmeter, by measuring the voltage across several 1.5 V cells in series, can 'count' the cells.

An introduction to the concept of internal resistance, using a more interesting example than a battery.

Finding an internal resistance of a supply from the power dissipated by a load resistance.