Prepare for the NCCER Electrical Level 2 Control Systems and Fundamental Concepts exam. Utilize flashcards and multiple choice questions with hints and explanations. Ensure success on your exam!

Multiple Choice

In a parallel circuit, what is true about the voltage across each component?

In a parallel circuit, all components are connected across the same two points, so the potential difference between those points is the same for every branch. That means the voltage across each component equals the supply voltage (assuming ideal wires and no internal resistance). The current, however, can vary from branch to branch depending on each component’s resistance, but the voltage remains constant across all branches. The total current is the sum of the branch currents. This is why the statement that the voltage across each component is the same is the correct description.

In a parallel circuit, all components are connected across the same two points, so the potential difference between those points is the same for every branch. That means the voltage across each component equals the supply voltage (assuming ideal wires and no internal resistance). The current, however, can vary from branch to branch depending on each component’s resistance, but the voltage remains constant across all branches. The total current is the sum of the branch currents. This is why the statement that the voltage across each component is the same is the correct description.