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A short bar magnet of magnetic moment 0.4 JT⁻¹ is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equlibrium when the potential energy is
Options
(a) -0.064 J
(b) zero
(c) -0.082 J
(d) 0.064 J
Correct Answer:
-0.064 J
Explanation:
For stable equilibrium
U = -MB
= – (0.4)(0.16)
= – 0.064 J
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻².
- A proton and helium nucleus are shot into a magnetic field at right angles to the field
- A comb run through one’s dry hair attracts small bits of paper. This is due to
- A battery charges a parallel plate capacitor seperated by distance(d) so that the energy
- If the alternating current I=I₁ cosωt+I₂ sinωt, then the rms current is given by
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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