Physics 0625 · IGCSE · Electrical safety

Electrical safety — practice question

Fig. 10.1 depicts a desktop computer linked to the mains supply through a plug that contains a fuse.
(a)[3]

Explain how an earth wire and the fuse in the plug safeguard the user.

(b)[3]

Calculate how many turns are on the output coil.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Earth wire joins metal case” …

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