A refrigerator consumes an average


A refrigerator consumes an average $35 \mathrm{~W}$ power to operate between temperature $-10^{\circ} \mathrm{C}$ to $25^{\circ} \mathrm{C}$. If there is no loss of energy then how much average heat per second does it transfer ?

  1. $263 \mathrm{~J} / \mathrm{s}$

  2. $298 \mathrm{~J} / \mathrm{s}$

  3. $350 \mathrm{~J} / \mathrm{s}$

  4. $35 \mathrm{~J} / \mathrm{s}$

Correct Option: 1


$\frac{T_{L}}{T_{H}-T_{L}}=$ C.O.P. $=\frac{\frac{d H}{d t}}{\frac{d W}{d t}}$

$\frac{263}{35} \times 35=\frac{\mathrm{dH}}{\mathrm{dt}}$

$\frac{\mathrm{dH}}{\mathrm{dt}}=263$ watts

Ans. 1


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