Explanation: To obtain the maximum output voltage from a group of similar cells, you connect them in **series**. When cells are wired in series, the positive terminal of one cell connects to the negative terminal of the next. This arrangement causes their individual voltages to add together, resulting in a higher total output voltage for the battery pack. This is a fundamental principle of basic electrical circuits, critical for understanding how power sources are constructed for amateur radio equipment. Connecting cells in **parallel** (A) would keep the output voltage the same as a single cell, but increase the total current capacity. A **series/parallel** (C) configuration would increase both voltage and capacity, but the resulting voltage would be less than a purely series connection of all cells.