Given, power consumed by refrigerator
P=35W=35Js−1 ∴ Energy consumed by refrigerator per second,
W=35J Lower temperature limit,
TL=−10°C=263K Higher temperature limit,
TH=25°C=298K The coefficient of performance of refrigerator is given as
COP== Here, Q is the heat transferred by the refrigerator.
Substituting the values, we get
= ⇒Q=×35=263J∕s Thus, the average heat transfer by refrigerator per second is
263Js−1.