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IT Support & Hardware · Foundational

Multimeter

A handheld meter that measures voltage, current, resistance, and continuity.

Definition

Technicians use multimeters to check PSU voltages, outlet wiring, batteries, and cable continuity. Settings include DC voltage, AC voltage, resistance (ohms), and continuity beep. Always select the correct mode and range before measuring.

Example

Measure +12.05 V DC between a yellow and black wire on a Molex connector.

Exam tip

Continuity tests are done with power off; voltage tests are done with power on.

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