Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

Fig. 9.1 and Fig. 9.2 each present a circuit with two resistors joined to a battery. In Fig. 9.1 the resistors are arranged in series, whereas in Fig. 9.2 the resistors are arranged in parallel. Every resistor has the same resistance. Neglect the resistance of the ammeters.
(a(i))[1]

Complete the comparison to show how the currents relate: The current in A$_1$ is .............. the current in A$_2$.

(a(ii))[1]

State the comparison between the two currents: The current in A$_3$ is .............. the current in A$_4$.

(a(iii))[1]

State the relation between the currents: The current in A$_4$ is .............. the current in A$_5$.

(a(iv))[1]

Complete the statement to compare the two currents: The current in A$_1$ is .............. the current in A$_3$.

(b)[1]

State one advantage of putting the lights in parallel.

(c)[4]

Calculate the resistance of resistor Q. Make sure you include the unit in your answer.

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