During the charging of a lead-acid cell__________?
Correct answer: A. its voltage increases
- A. its voltage increases
- B. it gives out energy
- C. its cathode becomes dark chocolate brown in colour
- D. specific gravity of H2SO4 decreases
Explanation
During charging, electrical energy converts lead sulphate back into lead and lead peroxide, causing the cell voltage and the electrolyte's specific gravity to rise. Hence the voltage-increase statement is correct.
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