Nate Electrical Practice Exam 2026 - Free Electrical Practice Questions and Study Guide

Question: 1 / 400

In a series circuit, how is the total voltage determined?

It is equal to the resistance in the circuit

It is equal to the sum of the voltages across each component

In a series circuit, the total voltage is determined by the sum of the voltages across each component. This principle is grounded in Kirchhoff's Voltage Law, which states that the total voltage around a closed loop in a circuit must equal the sum of the voltage drops across each component within that loop.

In a series configuration, the voltage across each individual component (such as resistors, bulbs, or other load devices) adds together to equal the total voltage provided by the power supply. For example, if you have a battery supplying 12 volts and two resistors in the series with voltage drops of 5 volts and 7 volts across them, the total voltage remains 12 volts (5V + 7V = 12V).

Thus, understanding this relationship helps in analyzing how voltage is distributed in series circuits, making option B the correct interpretation of how total voltage is determined in such configurations.

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It is always constant across all components

It varies based on the largest component

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