Electromagnetic Induction – Page 2 – HI MCQ!

The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be?

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A conductor 2 metres long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be?

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The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as?

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Two 800?H coils in series without mutual coupling have a total inductance of?

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ln an iron cored coil the iron core is removed so that the coil becomes an air cored coil The inductance of the coil will?

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Which of the following is not a unit of inductance?

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An e.m.f of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be?

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Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be?

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Which of the following circuit element stores energy in the electromagnetic field?

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As per Faraday’s laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it?

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