Given below are two statements : Statement-I: The reactance of an ac circuit is zero. It is possible that the circuit contains a capacitor and an inductor. Statement-II: In ac circuit, the average pow

Question

Given below are two statements : Statement-I: The reactance of an ac circuit is zero. It is possible that the circuit contains a capacitor and an inductor. Statement-II: In ac circuit, the average power delivered by the source never becomes zero. In the light of the above statements, choose the correct answer from the options given below

TestHub · Accepted Answer

The reactance of a circuit containing a capacitor and an inductor is given by $X = X_{L} - X_{C} = ω L - \frac{1}{ω C}$ . An AC circuit has zero reactance at resonance, i.e., when, $X_{L} = X_{C}$ . So, first statement is true.

The power consumption in an AC circuit is zero when circuit contains only inductance or capacitance since average power consumed in a cycle is zero for inductance or capacitance. So, second statement is false.

Physics - EMI/AC Question with Solution | TestHub

Options:

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