A copper calorimeter of negligible thermal capacity is filled with a liquid. The mass of the liquid is `250g`. A heating element of negligible thermal capacity is immersed in the liquid. It is found that the temperature of the calorimeter and its contents rise form `25^(@)C` to `30^(@)C` in 5 minutes when a current of 2.05 amperes is passed through it at a potential difference of 5 volts. The liquid is throuwn off and the heater is switched on again. It is now found that the temperature of the calorimeter alone remains constant at `32^(@)C` when the current through the heater is `0.7A` at the potential differfnce 6 volts. Calculate the specific heat capacity of the liquid. The temperature of the surroundings is `25^(@)C`.

Answer

`2100Jkg^(-1)K^(-1)`