A heater coil connected to 200 V has a resistance of 80 Q


#1

A heater coil connected to 200 V has a resistance of 80 Q. If the heater is plugged in for the time t such that 1 kg of water at 20°C attains a temperature of 60°C. Find
(i) the power of heater
(ii) the heat absorbed by water
(iii) the value of t in seconds.


#2