In current measurement with a DMM, which part of the circuit is replaced to insert the meter?

Prepare for the Supply Chain Automation Equipment Maintenance Test. Study with flashcards and multiple-choice questions, detailed explanations, and hints. Boost your readiness for the exam!

Multiple Choice

In current measurement with a DMM, which part of the circuit is replaced to insert the meter?

Explanation:
When you measure current with a DMM, the meter must become part of the current path, connected in series. To do this, you break a conductor—usually a wire—between two points and insert the meter there. The current then flows through the meter’s low-resistance internal shunt, letting it sense the current without significantly altering the circuit. Replacing a wire is essential because a series path is required for accurate current measurement. Putting the meter in parallel would create a short or distort the circuit, and replacing other components like inductors, capacitors, or resistors isn’t what allows the measurement.

When you measure current with a DMM, the meter must become part of the current path, connected in series. To do this, you break a conductor—usually a wire—between two points and insert the meter there. The current then flows through the meter’s low-resistance internal shunt, letting it sense the current without significantly altering the circuit. Replacing a wire is essential because a series path is required for accurate current measurement. Putting the meter in parallel would create a short or distort the circuit, and replacing other components like inductors, capacitors, or resistors isn’t what allows the measurement.

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