Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

A student measures the resistance of a length of wire. She intends to use the circuit shown in Fig. 8.1. Two of the circuit symbols are not complete.

(a)[2]

Complete the symbols for the two meters shown in Fig. 8.1.

(b)[3]

Calculate the resistance of this wire.

(c)[2]

Explain how the current in this thinner wire is different from that in the first wire.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$A$ in a circle placed in series with the wire” …