Alternating Cur...

In a L-C-R series circuit, the potential difference between the terminals of the inductance is 60 V, between the terminals of the capacitor is 30 V and that across the resistance is 40 V. Then, supply voltage will be equal to the

The natural frequency of an L-C circuit is 125000 cycle/s. Then the capacitor C is replaced by another capacitor with a dielectric medium of dielectric constant K. In this case, the frequency decreases by 25 kHz. The value of K is

Average power generated in an inductor connected to an AC source is

In a series L-C-R circuit, resistance R =10Ω and the impedance Z =10Ω. The phase difference between the current and the voltage is

A circuit consists of an inductance of 0.5 mH and a capacitor of 20 µF. The frequency of the L-C oscillations is approximately

An inductor is connected to an AC source. When compared to voltage, the current in the lead wires

A circuit has a resistance of 12 Ω and an impedance of 15 Ω. The power factor of the circuit will be

The phase difference between the alternating current and emf is π/2 . Which of the following cannot be the constituent of the circuit?

If the capacity of a condenser is 1 F, then its resistance in a DC circuit will be

An L-C-R circuit of R =100Ω is connected to an AC source 100 V, 50 Hz. The magnitude of phase difference between current and voltage is 30°. The power dissipated in the L-C-R circuit is