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2017 · M/J · 5054/12 | Q31

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CIE-5054-2017-MJ-p12 · Question 31

May/June 2017 Physics 5054/12: 40 multiple-choice questions, one mark each. No mark is deducted for a wrong answer. Electronic calculators may be used.
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31 Which action demagnetises a bar magnet? A placing the magnet inside a coil connected to a d.c. supply B placing the magnet inside a coil connected to an a.c. supply C withdrawing the magnet from inside a coil connected to a d.c. supply D withdrawing the magnet from inside a coil connected to an a.c. supply

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5054/12/M/J/17Cambridge O Level Physics 5054 · May/June 2017 · Paper 1 variant 2 · Question 31