If `R =25Omega` and inductive `reactance=50Omega` in an A.C circuit, then what will be its power factor?

A shunt of 1 Omega is connected in parallel with a galvanometer of resistance 99 Omega . IF the main current of the circuit be 1A, then what will be the galvanometer current?

What is the reactance of pure resistances in an ac circuit?

A coil has resistance 30 Omega and inductive reactance 20 Omega at 50 Hz frequency. If an ac source of 200V, 100 Hz is connected across the coil, the current in the coil will be

Find the power of an A.C. circuit. What is wattles current ?

A resistance of 400Omega and a capacitance of reactance 200Omega are connected in series to a 220V, 50Hz a.c source. If the current in the circuits is 0-49A. Find value of the inductance required so that voltage and current are in phase.

A resistance of 400Omega and a capacitance of reactance 200Omega are connected in series to a 220V, 50Hz a.c source. If the current in the circuitsis 0-49A. Find voltage across resistor and capacitor

Power factor of an LR circuit is 1/sqrt2 . If the frequency of ac is doubled, what will be the power factor?

The power factor of a LR circuit is 1/sqrt3 . IF the frequency of ac be doubled, what will be the power factor?

An alternating emf of E=20sin 1000tV is applied on a circuit containing a pure resistance of 25Omega in series with a coil of self-inductance 40 mH and resistance 15Omega . Find out the power factor of the circuit , Also , find out this capacitance of a capacitor that should be connected in series to raise the power factory to unity.