A Refrigerator Absorbs Energy of Magnitude $\mid$ Q_C $\mid$ As Heat from a Low Temperature Reservoir and Rejects Energy

question 7

Multiple Choice

A refrigerator absorbs energy of magnitude $\mid$ Q_C $\mid$ as heat from a low temperature reservoir and rejects energy of magnitude $\mid$ Q_H $\mid$ as heat to a high temperature reservoir. Work W is done on the working substance. The coefficient of performance is given by:

• A) \(\mid\)Q_C \(\mid\)/W
• B) \(\mid\)Q_H \(\mid\)/W
• C) (\(\mid\)Q_C \(\mid\) + \(\mid\)Q_H \(\mid\))/W
• D) W/\(\mid\)Q_C \(\mid\)
• E) W/\(\mid\)Q_H \(\mid\)

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