Quelpr
2 marksElectromagnetic Induction

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

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.

Describe briefly how you could show that the induced e.m.f. depends on the area of the coil.

The mark scheme is shown once you've answered.

Practise this question

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)(ii)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.[2 marks]
  6. 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]

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