Two Refrigerators,one with a COP of 4

question 51

Multiple Choice

Two refrigerators,one with a COP of 4.0 and another with a COP of 5.0,both extract 400 kJ of heat from the cold reservoir (food) .Calculate the difference in energy they exhaust to the hot reservoir and hence the room.

• A)320 kJ
• B)80 kJ
• C)125 kJ
• D)100 kJ
• E)20 kJ

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