Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

Fig. 8.1 plots how the electromotive force (e.m.f.) of a 60 Hz alternating current (a.c.) power supply changes with time.
(a)[1]

Calculate the time period of the a.c.

(b(i))[1]

State the name of component A.

(b(ii))[3]

Calculate the average current in the circuit for one time period.

(c)[2]

Mark, using an arrow labelled E, the direction of electron flow through component B and mark, using an arrow labelled I, the direction of the conventional current in component C.

(d)[2]

Calculate the power supplied by the power supply to the circuit.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: t=0.017 s, or 1.7 \times 10^-2 s

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