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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
Related Questions: - A cord is wound round the circumference of wheel of radius
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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 cord is wound round the circumference of wheel of radius
- Two point objects of masses 1.5 g and 2.5 g respectively are at a distance of 16 cm
- Which two of the following five physical parameters have the same dimensions?
- The force F acting on a particle of mass m is indicated by the force-time graph
- The potential difference applied to an X-ray tube is 5 kV and the current through it
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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