What happens to the current through the galvanometer when the Wheatstone bridge

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Question: What happens to the current through the galvanometer when the Wheatstone bridge is perfectly balanced?

Options:

Correct Answer: It is zero.

Solution:

When the Wheatstone bridge is perfectly balanced, the current through the galvanometer is zero.

What happens to the current through the galvanometer when the Wheatstone bridge is perfectly balanced?

What happens to the current through the galvanometer when the Wheatstone bridge is perfectly balanced?

Correct Answer: Current through the galvanometer is zero.

Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown electrical resistances.
Step 2: Know that the Wheatstone bridge has four resistors arranged in a diamond shape.
Step 3: Realize that a galvanometer is a device used to detect small currents in the circuit.
Step 4: Learn that the bridge is considered 'balanced' when the ratio of the resistances in one branch is equal to the ratio in the other branch.
Step 5: When the bridge is balanced, the voltage across the galvanometer becomes zero.
Step 6: Since there is no voltage across the galvanometer, no current can flow through it.
Step 7: Therefore, when the Wheatstone bridge is perfectly balanced, the current through the galvanometer is zero.

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