Simple electric circuit – measuring current and voltage

Integrated ScienceElectricity & MagnetismAges 13–14

A circuit with a battery, a switch, light bulbs, an ammeter wired in series and a voltmeter wired in parallel with a bulb. Flip the switch to open/close the circuit: electrons flow through the wires, the bulbs light up according to power, and the ammeter and voltmeter show readings; change the number of cells, the number of bulbs and the wiring (series/parallel) to compare I and U. Side scene: rub a plastic ruler on cloth and bring it near paper bits to see static electricity in action.