EXAMIANS
Which of the following circuit elements will oppose the change in circuit current?
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The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is
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The magnitude of the induced e.m.f. in a conductor depends on the
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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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Which of the following inductor will have the least eddy current losses?
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An open coil has
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If current in a conductor increases then according to Lenz's law self-induced voltage will
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A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by
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An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is
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The law that the induced e.m.f. and current always oppose the cause producing them is due to
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