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A metal rod of length l cuts across a uniform magnetic field B with a velocity v. If the resistance of the circuit of which the rod forms a part is r, then the force required to move the rod is
Options
(a) B²l²v/r
(b) Blv/r
(c) B²lv/r
(d) B²l²v²/r
Correct Answer:
B²l²v/r
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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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 heat dissipated in a resistance can be obtained by measuring of resistance,
- If the focal length of objective lens is increased, then magnifying power of
- A block of mass 4 kg is kept on a rough horizontal surface.The coefficient of static
- Suppose for some reasons, radius of earth were to shrink by 1% of present value,
- The mean radius of the earth is R, its angular speed on its own axis is ?
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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