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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
- In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
- If doubly ionised lithium atom is hydrogen like with atomic number 3, the wavelength
- In an LCR series A.C circuit, the voltage across each of the components, L, C and R is 50V
- A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
- If particles are moving with same velocity, then maximum de Broglie wavelength will
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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