Shaalaa.com | Reactance and impedance
An alternative voltage given by V = 140 sin 314t is connected across a pure resistor of 50 Ω. Find
(i) The frequency of the source.
(ii) The rms current through the resistor.
A light bulb is rated 100 W for 220 V ac supply of 50 Hz. Calculate
(i) The resistance of the bulb;
(ii) The rms current through the bulb.
A light bulb and a solenoid are connected in series across an ac source of voltage. Explain, how the glow of the light bulb will be affected when an iron rod is inserted in the solenoid.