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A charged particle (charge q) is moving in a circle of radius R with uniform speed v. The associated magnetic moment µ is given by
Options
(a) qvR²
(b) qvR² / 2
(c) qvR
(d) qvR / 2
Correct Answer:
qvR² / 2
Explanation:
Magnetic moment, m = IA
qv / 2πR (πR²) = qvR / 2
[ I = q/T and T = 2πR / v ]
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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 solenoid of length l metre has self inductance L henry. If number of turns
- At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure
- An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed
- A magnetic needle suspended parallel to a magnetic field requires √3J of work
- Pure Si at 300 k has equal electrons (nₑ) and hole (nh) concentrations
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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