96 questions in Electromagnetic Induction - HI MCQ!

For a 30 mH inductance (L1) and a 60 mH inductance (L2) The combined inductance of L1 and L2 in series aiding with 30 mH mutual inductance will be?

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For a purely inductive circuit which of the following is true?

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Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is?

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Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla?

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In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be?

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A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area,length etc.) remaining the same, the inductance will be?

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In case of an inductance, current is proportional to?

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Air-core coils are practically free from?

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The inductance of a coil will increase under all the following conditions except?

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For a purely inductive circuit which of the following is true?

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