Battery cells are connected in parallel to
(A) Increase the voltage output
(B) Increase the internal resistance
(C) Decrease the current capacity
(D) Increase the current capacity
Ans: (D) Increase the current capacity
Explanation:
1. Batteries are connected in parallel in order to increase the current supplying capacity.
2. If the load current is higher than the current rating of individual batteries, then the parallel connection of batteries is used.
3. The terminal voltage of all batteries connected in parallel must be the same.
4. If all the batteries are of the same current rating then they supply an equal amount of current. But if they are of different current ratings, then they share current in proportion with their ratings.