An electric kettle rated 2.1 kilowatt contains 1 kg of water.Assuming no heat loss and neglecting the thermal capacities of kettle,how long will it take to start to boil the water if its initial temp is 20C?
1 Answer
Dec 23, 2017
Given the power rating of the electrical kettle
If time taken to raise the temperature of 1 kg of water from
Again the heat energy reqired to raise the temperature of 1 kg of water from
So