Question

The efficiency of fuel cell is given by the expression η is

• A. \( \eta = \dfrac{nF E_{\text{cell}}}{\Delta H} \times 100 \)
• B. \( \eta = \dfrac{nF E_{\text{cell}}}{\Delta S} \times 100 \)
• C. \( \eta = \dfrac{nF E_{\text{cell}}}{\Delta A} \times 100 \)
• D. None of the above

Hint:

Fuel cells directly convert chemical energy into electrical energy.

Answer 1

The Correct Option is A

Efficiency of a fuel cell is the ratio of useful electrical energy obtained to the enthalpy change of the reaction.