Alternating Cur...

In an ac circuit the reactance of a coil is √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 π /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

For high frequency, a capacitor offers

The coil of choke in a circuit

In a circuit, the current lags behind the voltage by a phase difference of is π /2. The circuit contains which ofthe following

An oscillator circuit consists of an inductance of 0.5 mH and a capacitor of 20 μF. The resonant frequency of thecircuit is nearly

A circuit has a resistance of 11 Ω, an inductive reactance of 25 Ω and a capacitative resistance of 18 Ω. It is connected to an ac source of 260 V and 50 Hz. The current through the circuit (in amperes) is

A 0.7 henry inductor is connected across a 120V – 60 Hz ac source. The current in the inductor will be very nearly