In a series LCR circuit at resonance, which of the following is maximum?

A 12 ohm resistor and 0.038 henry inductor are connected in series to an ac source operating 100V, 50 Hz. The phase angle between the current and voltage source will be nearly

A 220 V, 50 Hz ac source is connected to an inductance of 0.2 H and a resistance of 20 ohm in series. What is the current in the circuit

The power dissipated in an AC circuit is zero if the circuit is

An ac voltage is applied to a resistance R and inductor L in series. If R and the inductive reactance are both equal to 3Ω, the phase difference between the applied voltage and the current in the circuit is

An inductive circuit contains a resistance of 10 ohm and an inductance of 2.0 henry. If an ac voltage of 120 volt and frequency of 60 Hz is applied to this circuit, the current in the circuit would be nearly

A coil has resistance of 30 ohm and inductive reactance 20 ohm at 50 Hz frequency if an ac source of 200 V, 100 Hz is connected across the coil, current in coil will be

The power dissipated in an AC circuit is zero if the circuit is

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

An inductance of 1 mH a condenser of 10 μF and a resistance of 50 Ω are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be

A coil of inductance L has an inductive reactance of ${X_L}$ in an AC circuit in which the effective current is $I$. The coil is made from a super-conducting material and has no resistance. The rate at which power is dissipated in the coil is