List of top Physics Questions on Power factor

If a resistor of resistance \(30\,\Omega\) and an inductor of reactance \(40\,\Omega\) are connected in series to an AC source of peak voltage \(200\sqrt2\,\mathrm{V}\), then the average power loss over a complete cycle is
In an ac circuit, if the rms value of current is 2 A and the wattless current is \(\sqrt{3}\) A, then the power factor of the circuit is
A 50 Hz AC circuit has a 10 mH inductor and a 2 $\omega$ resistor in series. The value of capacitance to be placed in series in the circuit to make the circuit power factor unity is:
A room heater is rated 750 W, 220 V. An electric bulb rated 200 W, 220 V is connected in series with this heater. What will be the power consumed by the bulb and the heater respectively, when the supply is at 220 V?