Meters and troubleshootingQuestion 305 of 1506

You measure a closed switch contact with a meter. What reading is expected?

Infinite resistance with the contacts closed
Full source voltage across the contacts
Near zero resistance and almost no voltage drop
Resistance equal to that of the load

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Correct answer: Near zero resistance and almost no voltage drop

Closed contacts should pass current with almost no drop.

Source: Troubleshooting Motors and Controls (Dickson-Self), 1.2: Electrical Fundamentals

Questions last reviewed: 18 October 2026

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