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Current and charge
These activities will help students to relate the idea of current (as shown by an ammeter) to the idea of electric charge (more familiar from experiments in electrostatics). Electrolysis links these two by showing that, the greater the current that flows, and the longer it flows for, the greater the mass of material released.
Experiments
Series and branching circuits [2]
Electrolysis of copper sulfate solution [3]
Electrolysis of water and the concept of charge [4]
Electric charge using capacitors [5]
From galvanometer to ammeter [6]
Related Guidance
Quantitative ideas in electricity [7]
Electric current [8]
[10]