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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
- An engine pumps water through a hose pipe. Water passes through the pipe
- A 6 volt battery is connected to the terminals of a three metre long wire of uniform
- A 100Ω resistance and a capacitor of 100Ω reactance are connected in series
- The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
- The half life of radium is about 1600 year. Of 100 gram of radium existing now
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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