EXAMIANS
Two 300 uH coils in series without mutual coupling have a total inductance of
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Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be
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If current in a conductor increases then according to Lenz's law self-induced voltage will
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The direction of induced e.m.f. can be found by
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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 laminated iron core has reduced eddy-current losses because
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A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is
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A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage?
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A crack in the magnetic path of an inductor will result in
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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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