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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.
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a small amount of antimony is added to germanium crystal
- A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- Steam at 100⁰C is passed into 20 g of water at 10°C. When water acquires a temperature
- A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless
- If the wavelength of light in vacuum be, the wavelength in a medium of refractive index
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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