Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test with our quiz. Utilize flashcards and multiple-choice questions, complete with hints and explanations. Achieve success in your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

When using an ohmmeter to measure the resistance of a component in a circuit, what must be done with one lead of the component?

It should be connected
It must be in series with the circuit
It should be disconnected
It must be grounded

The correct answer is: It should be disconnected

When measuring the resistance of a component in a circuit using an ohmmeter, it is essential that one lead of the component is disconnected. This ensures that you are accurately measuring the resistance of the specific component without any influence from other components or parallel paths in the circuit. If the component remains connected to the circuit while you are measuring, you may get misleading readings due to other pathways for current flow, which can significantly affect the resistance reading. Disconnecting one lead of the component isolates it, allowing the ohmmeter to apply a small voltage across the component and measure the resistance accurately. This practice is critical in diagnosing electrical problems, as it provides a clear understanding of the component's condition without external interference.