To measure a circuitʹs source voltage, the voltmeter must ________.
A)be placed across the source
B)be placed in series in the circuit
C)have the red lead towards the negative side of the source
D)have the black lead towards the positive side of the source

Question

Quizplus · Accepted Answer

To measure the source voltage, the voltmeter must be placed across the source. This means that the red lead of the voltmeter should be connected to the positive side of the source and the black lead should be connected to the negative side of the source. This is because voltage is measured as the potential difference between two points in a circuit, and in this case, we want to measure the potential difference between the positive and negative sides of the source.

To Measure a Circuitʹs Source Voltage, the Voltmeter Must ________