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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
- Which of the following transitions in hydrogen atoms emit photons of highest frequency?
- Two thin lenses when placed in contact, then the power of combination is +10 D.
- A ball rolls without slipping. The raidus of gyration of the ball about an axis
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
- A thin and circular disc of mass M and radius R is rotating in a horizontal plane
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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