Question 159Electricity & Electronics - QMED

The correct answer is C) use the highest voltage range on the voltmeter. When the approximate voltage to be measured in a circuit is unknown, it is best to start with the highest voltage range on the voltmeter. This ensures that the meter will not be damaged by a voltage that exceeds the selected range. Once the approximate voltage is determined, the range can then be adjusted to a more appropriate setting to obtain a more accurate reading. The other options are incorrect because: A) using the lowest range could potentially damage the meter, and B) connecting the meter in series would disrupt the circuit being measured.