If the voltage of a lamp is to be measured by a voltmeter, then:
A) connect the voltmeter in the same current path as the lamp
B) remove the lamp and put the voltmeter in the same current path as the lamp was in
C) open the circuit and connect the leads across the lamp
D) connect the leads across the lamp without opening the circuit

Question

Quizplus · Accepted Answer

Voltmeters are designed to measure the voltage across a component without interrupting the circuit. Therefore, the correct method is to connect the voltmeter leads across the lamp while the circuit remains closed, allowing for an accurate measurement of the voltage across the lamp.

If the Voltage of a Lamp Is to Be Measured