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The coefficient of mutual inductance of two coils is 6 mH. If the current flowing in one is 2A, the induced e.m.f. in the second coil will be
Options
(a) Zero
(b) 3 V
(c) 3 mV
(d) 2 mV
Correct Answer:
Zero
Explanation:
E.M.F. is induced in secondary coil only when current in primary coil changes. Since current in one coil is constant at 2 amp, e.m.f. induced in secondary coil is zero.
Related Questions: - A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- Two identical cells of the same e.m.f. and same internal resistance
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- Two identical cells of the same e.m.f. and same internal resistance
- Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units
- A car sounding a horn of frequency 100 Hz passes an observer. The ratio
- A potentiometer wire of length 100cm has a resistance of 10Ω. It is connected in series
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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