Alternating Cur...

In a series resonant R-L-C circuit, if L is increased by $$25 \%\ $$ and C is decreased by $$20\%\ $$, then the resonant frequency will

Which of the following device in alternating circuit provides maximum power

If an alternating current $$i=i_{m} \sin \omega t$$ is flowing through a capacitor then voltage drop $$\Delta V_{C}$$ across capacitor $$C$$ will be?

In the given circuit the potential difference across resistance is $$54\ V$$ and power consumed by it is $$16\ W$$. If $$AC$$ frequency is $$60Hz$$ find the value of $$L$$:-

The resistance $$R = 10\Omega$$, inductance L = 2 mH and capacitance $$c of 5 \mu F$$ are connected in same to an AC source of frequency 50 Hz, then at resonance the impedance of circuit is

Which of the shown graphs may represent the reactance of a series L-C combination?

In a series circuit, $$R=300 \Omega, L=0.9 H,C=2.0 \mu F$$ and $$\omega=1000 rad/s$$. The impedance of the circuit is 

Two inductors $$L_{1}$$ and $$L_{1}$$ are connected in parallel and a time varying current $$i$$ flows as shown. The ratio of current $$i_{1}/i_{2}$$ at any time $$t$$ is

If the frequency of the AC source connected across a series LCR circuit is continuously in which the following is observed. Assume all other parameters are kept the same.

The given graph shows volume with time in the source voltage and steady state current drawn by a series $$BLC$$ circuit:-
Which of the following statements is/are correct?
(a) Current lags the voltage.
(b) Resistance in the circuit is $$250\sqrt{\Omega}$$.
(c) Reactance in the circuit is $$250\Omega$$.
(d) Average power dissipation in the circuit is $$20\sqrt{3\Omega}$$