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

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

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

Steps: 6

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.