Physics · May / June 2026 · Paper 21 · Question 7
5054
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The question as text
Figure 7.1 shows a bathroom heater connected to a 240 V a.c. supply. A relay is used to turn on the heater. Parts of the relay are labelled in Figure 7.1. heater 240 V a.c. supply springy metal strip contacts pivot iron armature iron core switch S 12 V Figure 7.1 The armature and core are made of iron.
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7(a)[3]
7(b)[2]
7(c)[2]
7(d)[1]
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