Two 2V batteries connected in parallel maintain a total voltage of 2V because the voltage remains constant while the capacity (amp-hours) increases. In contrast, when the same batteries are connected in series, their voltages add up, resulting in a total of 4V. This behavior can be analogized to gravitational potential energy, where two vertical sticks represent the batteries; in parallel, both tops are at the same height (potential), while in series, the height (potential) of the upper stick is greater.
PREREQUISITESStudents studying electrical engineering, educators teaching circuit theory, and anyone interested in understanding battery behavior in different configurations.