Multiple choice

The internal resistance of which of the following instruments is the highest?

  1. Galvanometer

  2. Ammeter

  3. Voltmeter

  4. Millimeters

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

A voltmeter is designed to measure potential difference across a component and must be connected in parallel. To ensure it does not draw significant current from the circuit, it is built with a very high internal resistance.