Heat is supplied to a test tube containing 100g of ice at its melting point. The ice melts completely in 1 min.What is the power rating of the source of heat? [Latent heat of fusion of ice = 336Jg-1]
-
A.
336W -
B.
450W -
C.
560W -
D.
600W
Correct Answer: Option C
Explanation
p x t = heat energy
P x 1 x 60 = 100 x 336
p = 560W