Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The efficiency of a fuel cell is given by
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
The thermal efficiency, 
of a fuel conversion device is the amount of useful energy produced relative to the change in enthalpy, 
between the product and feed streams.
In an ideal case of an electrochemical convertor, such as a fuel cell, the change in Gibb’s free energy, 
of the reaction is available as useful electric energy at that temperature of the conversion.
Hence 
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