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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
- The horizontal and vertical components of earth’s magnetic field at a place
- If the unit of force and length are doubled, then unit of energy will be
- Pure Si at 300 k has equal electrons (nₑ) and hole (nh) concentrations
- A comb run through one’s dry hair attracts small bits of paper. This is due to
- A galvanometer of resistance 50Ω is connected to a battery of 3 V along with a resistance
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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