Multiple choice

Which of the following instruments is used to measure of emf?

  1. Galvanometer

  2. Voltmeter

  3. Ammeter

  4. Potentiometer

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A potentiometer is used to measure electromotive force (emf) accurately by balancing it against a known potential difference. Voltmeters measure potential difference but are less accurate for emf.