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3 marksMagnetic Fields

CAPE Physics Unit 2 · 2015 · Paper 2 · Question 4(d)

The calculations carried out in (c)(i) and (c)(ii) ignore the effect of the insulating plastic sheath in which the copper conductors are encased. Deduce the effect that the plastic sheath would have on the magnetic field of the current in Wire A and give a reason for your answer.

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Other parts of this question

  1. 4(a)By using the formula F = BIL\sin\theta, define FULLY the unit of magnetic flux density, the tesla.[3 marks]
  2. 4(b)(i)Calculate the current drawn from the source.[2 marks]
  3. 4(b)(ii)Redraw Figure 7 and add to your drawing a rough sketch of the magnetic field of the current in Conductor A. Indicate by an arrow on the diagram, the direction…[3 marks]
  4. 4(c)(i)Calculate the value of the magnetic field at B due to the current in A.[2 marks]
  5. 4(c)(ii)Determine the magnitude and direction of the force experienced by EACH centimetre of Wire B due to the magnetic field of the current in Wire A.[2 marks]

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