If you wire four 6V batteries in parallel, what will be the resulting voltage?

Wiring batteries in parallel means you are connecting the positive terminals together and the negative terminals together. When batteries are connected in this manner, the voltage remains the same as the voltage of a single battery in the configuration, while the capacity (amp-hour rating) increases.

In this case, since each of the four batteries has a voltage of 6 volts, connecting them in parallel allows the system to maintain that same voltage. Thus, the resulting voltage across the terminals of the connected batteries will be 6 volts, confirming the choice. This principle is critical when working with battery systems, as it enables adjustments to capacity without altering the voltage output, making it easier to design systems that meet specific voltage requirements.