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2023 · O/N · 5054/11 | Q32

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CIE-5054-2023-ON-p11 · Question 32

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).
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32 A charger for a mobile phone (cellphone) uses a transformer which steps the voltage down from 230V to 5.0V. The primary coil in the transformer has 2500 turns. How many turns are on the secondary coil? A 11 B 54 C 500 D 11500

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5054/11/O/N/23Cambridge O Level Physics 5054 · Oct/Nov 2023 · Paper 1 variant 1 · Question 32