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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
- In common base circuit of a transistor, current amplification factor is 0.95.
- An alternating voltage e=200s in100t is applied to a series combination
- A charged particle enters a uniform magnetic field with a certain speed at right angles
- A source and an observer approach each other with same velocity 50 m/s. If the frequency
- Two similar springs P and Q have spring constants Kp and Kq, such that Kp>Kq.
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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