Question Detail
Question
___________ is used for measuring potential difference.
Correct Answer
Option C is the correct answer.
Detailed Explanation
A voltmeter is an instrument used for measuring the electric potential difference (voltage) between two points in an electric circuit. An ammeter measures current, and an ohmmeter measures resistance. A potentiometer can also measure potential difference accurately by balancing it against a known voltage, but 'voltmeter' is the direct and most common answer for measurement.
Hint
Recall the basic functions of common electrical measuring instruments.