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10(b)2 marks

Fig. 10.1 shows a simplified circuit diagram for an electric oven containing a lamp, a heating element in series with a variable resistor, and a fan motor, all in parallel across the power supply. Fig. 10.1 includes a variable resistor.

Explain the function of the variable resistor in this circuit.

0625/03/SP/23Cambridge IGCSE Physics 0625 · Specimen 2023 · Paper 3 · Question 10(b)

Fig. 10.1 — see the question text for what it shows

Your answer

Suggested time: 3 min