A heater coil bearing a label 920 W 230 V is connected in a 230 V supply
Calculate the quantity of heat generated in 5 minutes.

An elastic heater of resistance 115ohm is made to work on 230 V supply Calculate the heat generated by this heater if it works for 10 minutes.

An elastic heater of resistance 115ohm is made to work on 230 V supply Calculate the power of this heater.

A 20 Omega resistor, 1.5 H inductor and 35 mu H capacitor are connected in series with a 220 V, 50 ac supply. Calculate the impedance of the circuit and also find the current through the circuit.

A 100Omega resistor is connected to a 220 V, 50 Hz ac supply What is the rms value of the current in the circuit?