Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

A student is trying to determine the resistance of a wire. He assembles the circuit shown in Fig. 11.1.
(a)[3]

Using the components shown in Fig. 11.1, draw the correct circuit diagram carefully in the space below.

(b)[3]

Calculate the wire’s resistance.

(c(i))[1]

State how the resistance compares with the first wire for a wire that is longer, but of the same thickness.

(c(ii))[1]

State how the resistance compares with the first wire for a wire that is thicker, but of the same length.

Worked solution & mark scheme

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