Alternating Cur...

In an alternating current circuit, the phase difference between current l and voltage is $$\phi$$, then the Wattless component of current will be -

In a RLC series circuit at resonance, the value of the power factor is :

A current of 2A flow in an inductance of 10H. for generating 100V EMF in it the rate of change current will be.

A source of 220V is applied in an A.C. circuit. The value of resistance is $$220 \Omega$$. Frequency & inductance are 50 Hz and 0.7 H, then wattless current is 

The self inductance of a choke coil is mH. when it is connected with a 10 VDC source then the loss of power is 20 watt. When it connected with 10 volt AC source loss of power is 10 watt. The frequency of AC source will bw-

In the phasors method for the only capacitive A.C. circuit, voltage is in +X direction then current is in direction. 

If an ac source is connected across  ideal capacitor and current passing through it is dentoed by curve then instantaneous power is denoted by curve

In LC oscillation resistance is $$100\Omega$$ and inductance and capacitance is $$1$$H and $$10\mu F$$. Find the half power of frequency.

If in an A.C., L-C series circuit $$X_c > X_L$$. Hence potential _________.

Two inductors each of inductance L are connected in parallel . what is their equivalent inductance?