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
Electrolysis of copper sulfate solution
Electrolysis of water and the concept of charge
Electric charge using capacitors
Related Guidance