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Electrical Comprehension DAA Practice Test

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In a series circuit, the sum of the potential differences across all components equals the battery's total potential difference?
Correct Answer:
The sum of the potential differences across all components
Explanation:
In a single-loop series circuit, Kirchhoff’s voltage law applies: the sum of all voltage drops around the loop must equal the supply voltage. The battery provides a fixed total potential difference, and as the same current flows through every component, the voltage across each component adds up to that same total. In other words, the sum of the potential differences across all components equals the battery’s total potential difference. The current and the resistance explain how that voltage is distributed (V = IR tells you how much drop each component gets for the given current), but the fundamental idea here is that voltages around the loop add up to the source voltage.

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