Which instrument measures voltage in a circuit?

Which instrument measures voltage in a circuit?

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

Answer: (D)

Voltage is the potential difference between two points in a circuit. To measure this, you use a voltmeter, an instrument designed to sense that potential difference. It’s connected in parallel across the component or portion of the circuit you want to know the voltage across, so it reads the same potential difference without drawing significant current from the circuit. The voltmeter has high internal resistance to minimize its impact on the circuit, and its reading is given in volts.

Voltage is the potential difference between two points in a circuit. To measure this, you use a voltmeter, an instrument designed to sense that potential difference. It’s connected in parallel across the component or portion of the circuit you want to know the voltage across, so it reads the same potential difference without drawing significant current from the circuit. The voltmeter has high internal resistance to minimize its impact on the circuit, and its reading is given in volts.