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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: - The threshold wavelength for photoelectric emission from a material is 4800 Å.
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The threshold wavelength for photoelectric emission from a material is 4800 Å.
- Two resistances 3Ω and 6Ω are connected in parallel
- The nuclear fusion reaction between deutrium and tritium takes place
- Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV.
- The ratio of the dimensions of planck’s constant and that of the moment of inertia is
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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