Q.

In an AC circuit, we have an inductance L joined in series to two resistors of resistance R each. In the first case, the resistors are in series with each other and in the second case, the resistors are parallel to each other. The power consumed by the circuit in the first case is 810W and in the second case, it is 506.25 W. If the source voltage is 225 V,

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a

Resistance R = 20 Ω

b

In the first case, the phase difference between current through the source and voltage across it is 370.

c

In the second case, the phase difference between current through the source and voltage across it is tan1(3).

d

Inductive reactance is 30 Ω

answer is A, B, C, D.

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