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The coil of choke in a circuit :
(a)increases the current
(b)controled the current
(c)has high resistance to d.c. circuit
(d)does not change the current

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Important Questions on Alternating Current
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The inductive reactance of an inductive coil with henry and 50 Hz :-

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An inductance of 0.4 Henry and a resistance of 100 ohm are connected to a A.C. voltage source of 220 V and 50 Hz. Then find out the phase difference between the voltage and current flowing in the circuit :

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A capacitor of capacitance and resistance of is connected in series with AC supply of . The current leads the voltage by-

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If the current through an inductor of inductance is given by , then the voltage across the inductor will be:-

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There is a resistance in an A.C., circuit. Inductance of 0.1 H is connected with it in series. If equation of A.C. e.m.f. is 5 sin 50 t then the phase difference between current and e.m.f. is :-

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resistance and inductance are connected in series with an A.C. circuit. The frequency of the source is . Then phase difference in between and will be:

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In showing figure find .

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An inductance of a condenser of and a resistance of are connected in series. The reactance of inductor and condensers are same. The reactance of either of them will be
