Theory: answer each printed part. For drawings, upload a clear photo of your sketch on the supplied figure; show working and units for calculations.
(a)Read question and case materials as text
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A permanent magnet hangs from an unstretched spring above a solenoid connected to a sensitive ammeter.
State a substance from which permanent magnets like the one in Fig. 8.1 are made.
A permanent magnet hangs from an unstretched spring above a solenoid connected to a sensitive ammeter.
Fig. 8.1
State a substance from which permanent magnets like the one in Fig. 8.1 are made.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[1 mark]
(b)(i)
The magnet in Fig. 8.1 is released and moves towards the solenoid. The ammeter shows a current. Explain why.
Answer guidance
Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.
[3 marks]
(b)(ii)
The magnet’s lower end is S. As it approaches, the top of the solenoid in Fig. 8.1 becomes S. Explain why.
Answer guidance
Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.
[2 marks]
(c)
The magnet in Fig. 8.1 oscillates up and down. Describe what happens to the solenoid current.
Answer guidance
Describe Say what happens, in order. Reasons are not required unless the question also asks why.
[2 marks]
5054/22/O/N/23Cambridge O Level Physics 5054 · Oct/Nov 2023 · Paper 2 variant 2 · Question 8