An immersion heater is rated 1500W. How long does it take the heater to raise the temperature of 1 kg of water by 30°C? (Assume heat lost to the surrounding is negligible, Specific heat capacity of water 4200Jkg-1K-1)
-
A.
84s -
B.
112s -
C.
130s -
D.
168s -
E.
280s