Physics 0625 · IGCSE · Electromagnetic effects

Electromagnetic effects — practice question

Fig. 11.1 depicts a charger for a mobile (cell) phone, and inside it is a transformer.

(a)[3]

Calculate the transformer’s output voltage.

(b)[1]

State which metal is used to make the transformer coils.

(c)[1]

Describe how alternating current (a.c.) differs from direct current (d.c.).

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Use the relation N1 / N2 = V1 / V2” …