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Magnetic fields (A-level only)

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Question 22

A steady current I I\,I dissipates power P P\,P in a resistor of resistance RRR. An alternating current through a resistor of resistance 4R 4R\,4R has a peak value of III. What is the average power dissipated in the second resistor?

A

P2\frac{P}{2}2P​

B

PPP

C

2P2P2P

D

4P4P4P

Markscheme

Magnetic fields (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Magnetic fields (A-level only)

66 exam-style questions on AQA A Level Physics Magnetic fields (A-level only), covering Magnetic flux density (A-level only), Moving charges in a magnetic field (A-level only), Magnetic flux and flux linkage (A-level only), Electromagnetic induction (A-level only), Alternating currents (A-level only), and The operation of a transformer (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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