In a balanced Wheatstone bridge, what is the potential difference across the gal

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Question: In a balanced Wheatstone bridge, what is the potential difference across the galvanometer?

Options:

Correct Answer: Zero

Solution:

In a balanced Wheatstone bridge, the potential difference across the galvanometer is zero.

In a balanced Wheatstone bridge, what is the potential difference across the galvanometer?

In a balanced Wheatstone bridge, what is the potential difference across the galvanometer?

Correct Answer: Zero

Step 1: Understand what a Wheatstone bridge is. It is a circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Step 2: Know that a Wheatstone bridge has four resistors and a galvanometer (a device that measures current).
Step 3: Learn what 'balanced' means in this context. A balanced Wheatstone bridge means that the ratio of the resistances in one leg is equal to the ratio in the other leg.
Step 4: When the bridge is balanced, the current through the galvanometer is zero because there is no potential difference to drive current through it.
Step 5: Therefore, the potential difference across the galvanometer is also zero when the bridge is balanced.

Wheatstone Bridge – A circuit used to measure unknown electrical resistances by balancing two legs of a bridge circuit.
Balanced Condition – Occurs when the ratio of resistances in one leg of the bridge is equal to the ratio in the other leg, resulting in no current flow through the galvanometer.
Galvanometer – An instrument for detecting and measuring small electric currents, which shows zero current in a balanced Wheatstone bridge.