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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
Related Questions: - A circular disc of radius R and thickness R/6 has moment of inertia I about an axis
- Huygen’s principle of secondary wavelets may be used to
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
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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 circular disc of radius R and thickness R/6 has moment of inertia I about an axis
- Huygen’s principle of secondary wavelets may be used to
- The length of an elastic string is a metre when the longitudinal tension is 4N and b
- A body is thrown vertically upward in air when air resistance is taken into account
- When a mass M is attached to a spring of force constant K,
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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