Which instrument is used to measure voltage?

Which instrument is used to measure voltage?

• A. Ammeter
• B. Voltmeter
• C. Ohmmeter
• D. Multimeter

Answer: (B)

Measuring voltage means determining the potential difference between two points in a circuit. A voltmeter is built specifically for this task and is connected in parallel across the points you want to compare, so it measures the potential difference without drawing significant current from the circuit. Its high input resistance minimizes circuit loading, ensuring an accurate reading in volts. An ammeter measures current and must be placed in series. An ohmmeter measures resistance. A multimeter can measure voltage, current, and resistance, but the instrument dedicated to measuring voltage is the voltmeter.

Measuring voltage means determining the potential difference between two points in a circuit. A voltmeter is built specifically for this task and is connected in parallel across the points you want to compare, so it measures the potential difference without drawing significant current from the circuit. Its high input resistance minimizes circuit loading, ensuring an accurate reading in volts. An ammeter measures current and must be placed in series. An ohmmeter measures resistance. A multimeter can measure voltage, current, and resistance, but the instrument dedicated to measuring voltage is the voltmeter.