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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 radioactive substance contains 10000 nuclei and its halflife period is 20 days
- Out of the following options which one can be used to produce a propagating
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
- Alternating current cannot be measured by D.C Ammeter because
- In an ammeter, 0.2% of main current passes through the galvanometer
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A radioactive substance contains 10000 nuclei and its halflife period is 20 days
- Out of the following options which one can be used to produce a propagating
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
- Alternating current cannot be measured by D.C Ammeter because
- In an ammeter, 0.2% of main current passes through the galvanometer
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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