Prove that an ideal capacitor in an a.c. circuit does not dissipate power.

(a) Prove that an ideal capacitor in ac circuit does not dissipate power. (b) An inductor of 200m H, capacitor of 400 mu f and a resistaor of 10 Omega are connected in series to ac source of 50 V of variable frequency. Calculate the (i) angular frquency at which maximum power dissiplation occurs in the circuit and the corresponding value of the effective current, and (iii) value of Q-factor in the circuit.

Calcualte energy stored in an inductor in an a.c. circuit. Show that average power consumed per cycle in an a.c. circuit containing pure indcutor is zero

An ideal inductor when connected in a.c. circuit does not produce heating effect though it reduces the current in the circuit. Explain why ?

Consider the following two statements A and B and identify the correct answer. {:A) At resonance of L-C series circuit, the reactance of circuit is minimum. {:B) The reactance of a capacitor is an A.C circuit is similar to the reactance of a capacitor in a D.C circuit

The reactance of a capacitor in an A.C. circuit is 10Omega . If the frequency of A.C. is doubled, its reactance will become

The power factor of an a.c. circuit is givne by cos phi =

The voltage and current in an a.c. circuit are given by E = 300 sin (omega t + pi//2) and I = 5 sin omega t . What is power factor of the circuit and power dissipated in each cycle ?