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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
- Stress to strain ratio is equivalent to
- The temperature coefficient of the resistance of a wire is 0.00125 per ⁰C.
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
- If dimensions of critical velocity of a liquid flowing through a tube are expressed
- In a given process on an ideal gas, dW=0 and dQ<0. Then for the gas
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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