Alternating Cur...

In the only capacitive circuit,A.C. voltage is.,

A condenser of capacity $$C$$ is charged to a potential difference of $$V_1$$. The plates of the condenser are then connected to an ideal inductor of inductance $$L$$. The current through the inductors when then potential difference across the condenser reduces to $$V_2$$

The resistance of a coil for dc is $$10 $$ ohm. When ac is sent through it, its resistance would be

On decreasing the angular frequency of A.C. source used in $$L-C-R$$ series circuit, the capacitive reactance____________ and inductive reactance _________ respectively.

Two long straight wires equal cross-sectional radii a are located parallel to each other in air .The distance between their axes equal b. Find the mutual capacitance of the wire per unit length under the condition b>>a

Current in the circuit is wattless, if 

The equation P of an ac is represented by I=0.6 sin 100 $$\pi t$$. The frequency of ac is

In a series LCR circuit $$R=200\Omega $$ and the voltage and the frequency of the main supply is 220 V and 50 Hz respectively. On talking out the capacities from the circuit the current lags behind the voltage by $${ 30 }^{ \circ  }$$ On taking out the induct or from the circuit the current leads the voltage by $${ 30 }^{ \circ  }$$ The power dissipated in the LCR circuit is  

Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be

The average power of A.C. lost per cycle is given by?