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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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Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wooden stick 2 m long is floating on the surface of water. The surface tension
- The instantaneous angular position of a point on a rotating wheel is given by
- A body of mass M hits normally a rigid wall with velocity V and bounces back
- Find the fundamental frequency of a closed pipe if the length of air column is 42m.
- The potential energy of particle in a force field is U = A/r² – b/r, where A and B
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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