Engine 2014: Electricity

1. A to allow multiple cells to be connected in such a way as to increase the ampere-hour capacity of the battery
2. B to allow multiple cells to be connected in such a way as to increase the voltage output of the battery
3. C to connect the positive plate group terminal of one cell to the positive plate group terminal of the adjacent cell
4. D to connect the negative plate group terminal of one cell to the negative plate group terminal of the adjacent cell

Tip: press A-D to answer