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2 marksElectromagnetic Induction

CAPE Physics Unit 2 · 2008 (T&T) · Paper 2 · Question 1(b)(ii)

A coil with 16 turns is wound on top of a solenoid with cross-sectional area of 50 cm^2. An a.c. current through the solenoid produces a peak magnetic field of 7.5 mT changing at a frequency of 500 Hz.

Find the peak value of the e.m.f. induced in the coil, given that the equation for the variation of the flux linkage is \Phi = \Phi_0 \sin 2\pi f t.

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Other parts of this question

  1. 1(a)(i)With the aid of a diagram explain the meaning of the term 'magnetic flux'.[2 marks]
  2. 1(a)(ii)How is the unit of magnetic flux density related to the tesla?[1 mark]
  3. 1(a)(iii)State Faraday's law of electromagnetic induction.[1 mark]
  4. 1(b)(i)Calculate the MAXIMUM value of the TOTAL flux linkage through the 16 turn coil.[3 marks]
  5. 1(b)(iii)Show on Figure 2 (b) the c.r.o. trace expected if the number of turns wrapped around the solenoid was increased to 32, and on Figure 2 (c) show the effect of…[4 marks]
  6. 1(b)(iv)Describe briefly how you could show that the induced e.m.f. depends on the area of the coil.[2 marks]

More practice: the rest of this paper · more Electromagnetic Induction questions · all CAPE Physics Unit 2 past papers