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Magnetic Dipole Moment Practice Questions

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The following physics revision questions are provided in support of the physics tutorial on Magnetic Dipole Moment. 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 Magnetic Dipole Moment tutorials. The Magnetic Dipole Moment 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
16.5Magnetic Dipole Moment

Magnetic Dipole Moment Revision Questions

1) What is the magnetic dipole moment (magnitude and direction) of the coil shown in the figure?

Physics Tutorials: This image provides visual information for the physics tutorial Magnetic Dipole Moment
  1. 0.8 A ∙ m2 (down)
  2. 0.008 A ∙ m2 (up)
  3. 0.025 A ∙ m2 (up)
  4. 0.001 A ∙ m2 (down)

Correct Answer: D

2) What is the torque produced on the coil shown in the figure if the coil has 6 turns and 0.25A current is flowing through it? The coil is leaned by 37° to the direction of the 0,75T uniform magnetic field lines and the diameter of coil is 2 cm. (Take cos 37° = 0.8 and sin 37° = 0.6).

Physics Tutorials: This image provides visual information for the physics tutorial Magnetic Dipole Moment
  1. 3.53 × 10-3 N ∙ m
  2. 3.53 × 10-5 N ∙ m
  3. 1.13 × 10-5 N ∙ m
  4. 1.13 × 10-3 N ∙ m

Correct Answer: B

3) What is the energy possessed by the coil shown in the figure if the diameter of a single loop is 6 cm, the current flowing through the coil is 0.4 A and the (uniform) magnetic field between the two magnets is 4T. The coil is placed horizontally and the magnets vertically.

Physics Tutorials: This image provides visual information for the physics tutorial Magnetic Dipole Moment
  1. 0 J
  2. -2.939 × 10-2 J
  3. 2.939 × 10-2 J
  4. 1.13 × 10-3 J

Correct Answer: C

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