How is resistance measured?

How is resistance measured?

• A. Voltage meter
• B. Ampermeter
• C. Ohmmeter
• D. Wattmeter

Answer: (C)

Resistance is measured using an ohmmeter. An ohmmeter is specifically designed to measure the resistance of electrical components by applying a known voltage and measuring the current that flows through the component to calculate its resistance using Ohm's Law (R = V/I). This instrument is essential for diagnosing electrical issues, testing components, and ensuring that circuits function correctly. The other options pertain to different electrical measurements: a voltage meter measures voltage, an ammeter measures current, and a wattmeter measures power in watts. Each of these instruments serves a distinct purpose in electrical measurements, but none are designed to measure resistance directly, making the ohmmeter the correct choice for this question.

Resistance is measured using an ohmmeter. An ohmmeter is specifically designed to measure the resistance of electrical components by applying a known voltage and measuring the current that flows through the component to calculate its resistance using Ohm's Law (R = V/I). This instrument is essential for diagnosing electrical issues, testing components, and ensuring that circuits function correctly.

The other options pertain to different electrical measurements: a voltage meter measures voltage, an ammeter measures current, and a wattmeter measures power in watts. Each of these instruments serves a distinct purpose in electrical measurements, but none are designed to measure resistance directly, making the ohmmeter the correct choice for this question.