38. The thermodynamic efficiency () of a reversible fuel cell operating under standard conditions is theoretically defined by the ratio:

Question

38. The thermodynamic efficiency ($\eta$) of a reversible $H_2-O_2$ fuel cell operating under standard conditions is theoretically defined by the ratio:

Prashant Kotian · Accepted Answer

Correct answer: C. The theoretical thermodynamic efficiency of a fuel cell is defined as the ratio of useful electrical work extracted () to the total thermal energy available from the fuel's combustion (). Therefore, .

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