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2018 · O/N · 5054/11 | Q34

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CIE-5054-2018-ON-p11 · Question 34

October/November 2018 Physics 5054/11: 40 multiple-choice questions, one mark each. No mark is deducted for a wrong answer. Electronic calculators may be used.
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34 A 12V lamp glows at normal brightness when connected to the secondary coil of a mains transformer. The mains voltage is 240V. The transformer is 100% efficient and the primary coil has 200 turns. How many turns are there on the secondary coil? A 10 B 14 C 4000 D 580000

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5054/11/O/N/18Cambridge O Level Physics 5054 · Oct/Nov 2018 · Paper 1 variant 1 · Question 34