MHT-CET

25. Alternating Current question bank (Physics)

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Q1.

At a particular angular frequency,the reactance of a capacitor and that of an inductor are the same. If the angular frequency is doubled,the ratio of the reactance of the capacitor to that of the inductor will be:

(A)

$\frac{1}{4}$

(B)

$\frac{1}{2}$

(C)

$2$

(D)

$4$

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Q2.

In a series $LR$ circuit with $X_L = R$. Power factor is $P_1$. If a capacitor of capacitance $C$ with $X_c = X_L$ is added to the circuit the power factor becomes $P_2$. The ratio of $P_1$ to $P_2$ will be :

(A)

$1 : 3$

(B)

$1 : \sqrt{2}$

(C)

$1 : 1$

(D)

$1 : 2$

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