Which instrument measures continuity, voltage, and resistance?

• A. NEXRAD
• B. Spectrum Analyzer
• C. Bit Error Rate Test Set
• D. Multimeter

Answer: (A)

Measuring basic electrical properties such as continuity, voltage, and resistance is done with a multimeter. This handheld tool combines an ohmmeter to measure resistance, a continuity tester that beeps when a circuit is closed, and a voltmeter to measure voltage (both AC and DC on many models). That combination lets you quickly verify that a circuit has a path, check for proper resistance values, and confirm the presence and level of voltage.

The other instruments serve different purposes: a weather radar detects precipitation and air movement, a spectrum analyzer examines the frequency content of signals, and a bit error rate test set evaluates data integrity in communications links. None of them provide the multi-function capability of measuring continuity, voltage, and resistance in one tool.