Which law relates to total voltages in circuits?

Kirchhoff's Law is essential in understanding the behavior of voltages in electrical circuits. Specifically, Kirchhoff's Voltage Law (KVL) states that the sum of the electrical potential differences (voltages) around any closed network is zero. This means that when you add up all the voltages in a closed loop of a circuit, the total voltage rise (from sources like batteries) is equal to the total voltage drop (across components like resistors). This principle is fundamental for analyzing and solving circuit problems, ensuring that energy conservation is maintained within the system.

In contrast, the other laws mentioned have different focuses: Ohm's Law relates voltage, current, and resistance; Watt's Law connects power with voltage and current; and Faraday's Law addresses electromagnetic induction. Therefore, while all these laws are critical in the field of electrical engineering, Kirchhoff's Law specifically addresses the total voltages in circuits, making it the correct choice for this question.