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The self induced e.m.f. in a 0.1 H coil when the current in it is changing at the rate of 200 amp/sec is
Options
(a) 8×10⁻⁴ V
(b) 8×10⁻⁵ V
(c) 20 V
(d) 125 V
Correct Answer:
20 V
Explanation:
e = – L (dI / dt), Magnitude of e = L (dI / dt) = 0.1 × 200 = 20 V
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Dependence of intensity of gravitational field (E) of earth with distance(r)
- Initial pressure and volume of a gas are P and 800cc. If the final volume is 100cc
- If the alternating current I=I₁ cosωt+I₂ sinωt, then the rms current is given by
- A solid cylinder of mass M and radius R rolls without slipping down and inclined plane
- A cyclist is riding with a spped of 27 km/h.As he approaches a circular turn
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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