Questions in Alternating Current

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	In the circuit shown below, the ac source has voltage $V = 20\cos (\omega t)$ volts with $\omega $= 2000 rad/sec. the amplitude of the current will be nearest to
	The value of the current through an inductance of $1H$ and of negligible resistance, when connected through an ac source of $200$ V and $50$ Hz, is
	The quality factor of LCR circuit having resistance ($R$) and inductance ($L$) at resonance frequency ($\omega $) is given by
	Power factor is maximum in an LCR circuit when
	In an ac circuit the reactance of a coil is $\sqrt 3 $ times its resistance, the phase difference between the voltage across the coil to the current through the coil will be
	The capacity of a pure capacitor is 1 farad. In dc circuits, its effective resistance will be
	In an ac circuit, the current lags behind the voltage by $\pi /3$. The components in the circuit are
	The reactance of a coil when used in the domestic ac power supply (220 volts, 50 cycles per second) is 50 ohms. The inductance of the coil is nearly
	In an ac circuit, the power factor
	A resistance of 40 ohm and an inductance of 95.5 millihenry are connected in series in a 50 cycles/second ac circuit. The impedance of this combination is very nearly