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A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B. If a force F is experienced by each pole of the magnet, the length of the magnet will be
Options
(a) F/MB
(b) MB/F
(c) BF/M
(d) MF/B
Correct Answer:
MB/F
Explanation:
FL = MB (= Torque)
L = MB/F
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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 particle moves in xy plane according to the equation x = 4t² + 5t + 16 and y = 5t
- Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
- Two balls of mass m₁ and m₂ are separated from each other by powder charge
- A thin wire of length L and mass M is bent to form a semicircle.
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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