CAPE Physics Unit 2 · 2009 · Paper 2 · Question 4(a)(iii)
Electromagnetism concepts and laws.
State Lenz's law.
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Practise this questionOther parts of this question
- 4(a)(i)Distinguish between 'magnetic flux density' and 'magnetic flux'.[2 marks]
- 4(a)(ii)State Faraday's law of electromagnetic induction.[1 mark]
- 4(b)(i)Explain why an e.m.f. is generated between the axle and the rim of the disc as it rotates.[2 marks]
- 4(b)(ii)a)Calculate the magnetic field within the solenoid.[2 marks]
- 4(b)(ii)b)Calculate the magnetic flux cut by the disc in every revolution.[2 marks]
- 4(b)(ii)c)Calculate the potential difference maintained between the rim and the axle of the disc.[2 marks]
- 4(c)Describe how the apparatus in Figure 5 could verify Faraday's law: sketch the expected graph of e.m.f. versus motor speed, explain how the conclusion is drawn…[3 marks]
More practice: the rest of this paper · more Electromagnetic Induction questions · all CAPE Physics Unit 2 past papers