Questions in Alternating Current

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	Same current is flowing in two alternating circuits. The first circuit contains only inductance and the other contains only a capacitor. If the frequency of the e.m.f. of ac is increased, the effect on the value of the current will be
	A capacitor is a perfect insulator for
	In a circuit containing an inductance of zero resistance, the e.m.f. of the applied ac voltage leads the current by
	In a pure inductive circuit or In an ac circuit containing inductance only, the current
	A $20 volts$ ac is applied to a circuit consisting of a resistance and a coil with negligible resistance. If the voltage across the resistance is $12 V$, the voltage across the coil is
	A resistance of $300 \Omega$ and an inductance of $\frac{1}{\pi }$ henry are connected in series to a ac voltage of $20$ volts and $200$ Hz frequency. The phase angle between the voltage and current is
	The power factor of LCR circuit at resonance is
	An inductance of $1 mH$ a condenser of $10 \mu F$ and a resistance of $50 \Omega$ are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be
	The natural frequency of a $L-C$ circuit is equal to
	An alternating voltage $E = 200\sqrt 2 \sin (100\,t)$ is connected to a 1 microfarad capacitor through an ac ammeter. The reading of the ammeter shall be