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 balanced?

Options:

Correct Answer: It becomes zero

Solution:

When the Wheatstone bridge is balanced, the potential difference across the galvanometer is zero, resulting in zero current through it.

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

What happens to the current through the galvanometer when the Wheatstone bridge is 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 resistances.
Step 2: Know that the Wheatstone bridge has four resistors and a galvanometer (a device that measures current).
Step 3: When the bridge is balanced, it means the ratio of the two resistors on one side is equal to the ratio of the two resistors on the other side.
Step 4: When the bridge is balanced, the voltage (or potential difference) across the galvanometer becomes zero.
Step 5: Since the voltage across the galvanometer is zero, no current can flow through it.
Step 6: Therefore, when the Wheatstone bridge is balanced, the current through the galvanometer is zero.

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