Meters and troubleshootingQuestion 312 of 1506

Which condition must be met before measuring resistance of a component?

The component must be de-energized
It must be connected to a live source
It must be under full load
The red lead must be in the A socket

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Correct answer: The component must be de-energized

Outside voltage disturbs the meter's own test current and can damage the meter.

Source: Troubleshooting Motors and Controls (Dickson-Self), 1.3: Meter Usage

Questions last reviewed: 18 October 2026

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