Question 23
In the investigation Making predictions about current, a lamp and a buzzer are in parallel across low-voltage cells. A₁ is the lamp-branch current, A₂ the buzzer-branch current, and A₃ denotes current through the cell. Work in groups of two or three. Use three lamps, one buzzer, optional other components, suitable cells, wires and an ammeter. Build the first circuit, check it works, then measure at the A₁ and A₂ positions in turn.
