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Faraday's Law of Induction Practice Questions

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The following physics revision questions are provided in support of the physics tutorial on Faraday's Law of Induction. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Faraday's Law of Induction tutorials. The Faraday's Law of Induction calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

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Magnetism Learning Material
Tutorial IDTitleTutorialVideo
Tutorial		Revision
Notes		Revision
Questions
16.7Faraday's Law of Induction

Faraday's Law of Induction Revision Questions

1) The magnetic flux through a coil of 200 turns is changing at a rate of 0.4 Wb/s What is the total emf induced in the coil?

  1. 80 V
  2. -80 V
  3. 500 V
  4. -500 V

Correct Answer: B

2) A 60 cm long conducting bar is placed inside a 0.05 T magnetic field in the vertical direction shown in the figure. The magnetic field lines are directed into the page. What is the induced emf across the wire if it is moved at 2 m/s due right?

Physics Tutorials: This image provides visual information for the physics tutorial Faraday's Law of Induction
  1. 0.06 V
  2. 0.6 V
  3. 6 V
  4. 60 V

Correct Answer: A

3) A 1.2 m long metal bar is free to slide vertically between two vertical copper tracks. A constant magnetic field of magnitude 5 T is directed perpendicular to the axes of copper tracks, as shown in the figure. The bar moves under the effect of gravity at 2 m/s constant speed. What is the induced current in the 40 Ω resistor?

Physics Tutorials: This image provides visual information for the physics tutorial Faraday's Law of Induction
  1. 12 A
  2. 1.2 A
  3. 0.3 A
  4. 0.25 A

Correct Answer: C

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  5. Continuing learning magnetism - read our next physics tutorial: Lentz Law

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