

Voltage and Current - Technical MCQs
Q1: Batteries differ from fuel cells in thatA a battery is a closed system
B a battery uses hydrogen and oxygen to create electricity
C a battery uses a polymer electrolyte membrane
D none of the above
ANS:A - a battery is a closed system The key difference between a battery and a fuel cell is that a battery runs down as the electrodes dissolve, but a fuel cell operates for as long as oxygen and hydrogen flow. The battery is an energy storage device. It stores its fuel internally. A fuel cell is an energy conversion device. Its fuel is supplied externally. |


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