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Physics Past Questions and Answers

Topic: Factors affecting induced emf

Jamb Physics Questions - Factors affecting induced emf

Question 1:
Which of the following radiations cannot be deflected by a magnetic field?
  • A \(\alpha\)
  • B \(\beta\)
  • C \(\gamma\)
  • D \(\beta\) and \(\gamma\)
  • E None of them
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Question 2:
Which of the following is most strongly deflected by magnetic field?
  • A \(\gamma\) - rays
  • B X- particle
  • C \(\beta\) - particles
  • D X - rays
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Question 3:
A conductor of length 2m carries a current of 0.8A while kept in a magnetic field of magnetic flux density 0.5T. The maximum force acting on it is
  • A 0.2N
  • B 0.8N
  • C 3.2N
  • D 8.0N
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Question 4:
A band of 500 rectangular loops of wire of area 20 cm by 20 cm, encloses a region of magnetic field which charges from 1.0T to 0.4T within 5 seconds, calculate the induced e.m.f.
  • A 5.60 v
  • B 24.00 v
  • C 0.24 v
  • D 2.40 v
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Question 5:
A conductor of length 2m carries a current of 0.8A while kept in a magnetic field of magnetic flux density 0.5T. The maximum force acting on it is
  • A 0.2N
  • B 0.8N
  • C 3.2N
  • D 8.0N
View Answer & Explanation