Alternating Cur...

In an ideal parallel LC circuit, the capacitor is charged by connecting it to a DC source which is then disconnected. The current in the circuit

The self inductance of the motor of an electric fan is 10 H. In order to impart maximum powr of 50 Hz, it should be connected to a capacitance of

In a purely inductive circuit, the current:

In a circuit, the current lags behind the voltage by a phase difference of $$\displaystyle { \pi  }/{ 2 }$$, the circuit will contain which of the following: 

Alternating current is one which changes in its :

Inductive reactance of a coil is expressed in

If the inductance and capacitance are both doubled in L-C-R circuit, the resonant frequency of the circuit will :

An A.C. circuit containing only capacitance, the current :

Assertion: The resistance offered by an inductor in a d.c circuit is always constant.
Reason : The resistance of inductor in steady state is non-zero. 

Assertion: In the purely resistive element of a series LCR, AC circuit the maximum value of rms current increases with increase in the angular frequency of the applied e.m.f.
Reason: $$\displaystyle { I }_{ max }=\frac { { \varepsilon  }_{ max } }{ z } ,z=\sqrt { { R }^{ 2 }+{ \left( \omega L-\frac { I }{ \omega C }  \right)  }^{ 2 } } $$
where $$\displaystyle { I }_{ max }$$ is the peak current in a cycle.