Topic : power in ac circuit: the power factor

The power factor of an ac series circuit having resistance R and inductance L connected in series with a source having angular frequency ω is

A resistance $R$ draws power $P$ when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes $Z$ the power drawn will be

A direct current of 4 A and an alternating current of 4 A flows through two identical resistors. The ratio of heat produced in the two resistances in same time interval will be

Power factor of series LCR circuit at resonance is

A series LCR circuit has resistance of 10 Ω and impedance of 25 Ω. The power factor of circuit will be