Question

If the lead-acid battery is discharged too far or left in a discharged condition, it cannot be recharged any more because:

• A. terminal voltage becomes too low
• B. hard lead sulphate forms on its electrodes
• C. internal resistance of the cell becomes very high
• D. internal resistance of the cell becomes too low

Answer 1

The correct option is B hard lead sulphate forms on its electrodes

If lead battery is left unused for longer period of time then hard lead sulphate forms on its electrolytes and it become very difficult to charge it again.