What is the principle behind the working of a galvanometer? (2023)

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Question: What is the principle behind the working of a galvanometer? (2023)

Options:

Correct Answer: Magnetic force on a current-carrying conductor

Exam Year: 2023

Solution:

A galvanometer works on the principle of the magnetic force acting on a current-carrying conductor placed in a magnetic field.

What is the principle behind the working of a galvanometer? (2023)

What is the principle behind the working of a galvanometer? (2023)

Step 1: Understand that a galvanometer is a device used to measure electric current.
Step 2: Know that it works by using a magnetic field.
Step 3: Realize that when electric current flows through a wire, it creates a magnetic field around the wire.
Step 4: Recognize that if this wire is placed in another magnetic field (like the one in the galvanometer), it experiences a force.
Step 5: This force causes the wire (or a needle attached to it) to move, which is what the galvanometer measures.
Step 6: The amount of movement of the needle indicates the strength of the current flowing through the wire.

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