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This clip explains how current is the flow of electrons around a circuit and voltage is the energy released by electrons. The ways in which current and voltage are measured are seen. Animations of electrons moving around circuit diagrams are also seen.
This clip is from:
First broadcast:
21 November 2008

Classroom Ideas

Ask pupils to complete a circuit using different materials to see if they have free electrons and are therefore conductors or insulators. Record the pupils' results in a table.