If resistor R5 is disconnected at the junction of R4 and R3, what will the ohmmeter read?

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Enhance your understanding of the fundamentals of electricity with the AMT General Exam. Study with multiple-choice questions crafted to improve your knowledge and confidence. Prepare effectively for your success!

Multiple Choice

If resistor R5 is disconnected at the junction of R4 and R3, what will the ohmmeter read?

Explanation:
An ohmmeter measures the resistance along the path between its two probes. When R5 is disconnected at the junction of R3 and R4, the current from the meter can only flow through R3 and R4 in series. In series, resistances add, so the total the meter sees is R3 + R4. Since that series combination equals 3 ohms, the ohmmeter reads 3 ohms. The disconnected R5 no longer provides any current path, so it doesn’t affect the reading.

An ohmmeter measures the resistance along the path between its two probes. When R5 is disconnected at the junction of R3 and R4, the current from the meter can only flow through R3 and R4 in series. In series, resistances add, so the total the meter sees is R3 + R4. Since that series combination equals 3 ohms, the ohmmeter reads 3 ohms. The disconnected R5 no longer provides any current path, so it doesn’t affect the reading.

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