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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: - Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
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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
- Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
- The name of ions knocked out from the hot surface is
- In a tangent galvanometer, a current of 0.1 A produces a deflection of 30⁰.
- Two bulbs 60 W and 100 W designed for voltage 220 V are connected in series
- Two closed organ pipes when sounded simultaneously give 4 beats/second.
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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