A `50 Omega` electric iron is connected to an ac supply of 200V, 50 Hz. Calculate (i) average power delivered to iron (ii) peak power and (iii) energy spent in one minute.

A 200 ohm electric iron is connected to 220 V, 50 Hz a.c. supply. Calculate the average power delivered to iron.

A 50 Omega electric heater is connected to 100 V. 60 Hz ac sinusoidal supply.

A 100 Omega iron is connected to a 220 V, 50 cycles wall plug. What is (i) peak potential difference (ii) average potential difference and (iii) rms current?

A 10 mu g capacitor is in series with a 50 Omega resistance and the combination is connected to a 220V , 50Hz line. Calculate (i) the capactive reactance, (ii) the impedance of the circuit and (iii) the current in the circuit.

A 100 Omega iron is connected to an AC source of 220 V 50 Hz . Calculate the time taken by the current to change from its maximum value to rms value .

A 40Omega electric heater is connected to a 200V, 50Hz main supply. The peak value of electric current flowing in the circuit is approx.

A 50 W, 100V lamp is to be connected to an ac mains of 200V, 50 Hz. What capacitor is essential to be put in series with the lamp?

An electric kettle connected to the 230V mains supply draws a current of 10 A. Calculate: (a) the power of the kettle. (b) the energy transferred in 1 minute.

A 40Omega electric heater is connected to a 200 V , 50 Hz mains supply. The peak value of electric current flowing in the circuit is approximately

A 40 micro F capacitor is connected to a 200V, 50 Hz ac supply. Rms value of current in circuit is nearly