एक प्रत्यावर्ती धारा (AC) परिपथ में, धारा i = 5 sin(100t - π/2) A है और वोल्टेज e = 200 sin(100t) V है। परिपथ में औसत शक्ति की खपत कितनी है?

An alternating voltage source of variable angular frequency ω and fixed amplitude V is connected in series with a capacitance C and an electric bulb of resistance R (zero inductance). When ω is increased, what happens to the brightness of the bulb?

An inductor of reactance 1 Ω and a resistor of 2 Ω are connected in series to the terminals of a 6 V (rms) AC source. The power dissipated in the circuit is: