If the galvanometer in a Wheatstone bridge shows a deflection, what does it indi

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Question: If the galvanometer in a Wheatstone bridge shows a deflection, what does it indicate?

Options:

Correct Answer: The bridge is unbalanced.

Solution:

A deflection in the galvanometer indicates that the bridge is unbalanced, meaning the ratios of resistances are not equal.

If the galvanometer in a Wheatstone bridge shows a deflection, what does it indicate?

If the galvanometer in a Wheatstone bridge shows a deflection, what does it indicate?

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 galvanometer is an instrument that detects small electric currents. In this case, it shows whether there is a current flowing through it.
Step 3: When the Wheatstone bridge is balanced, the current through the galvanometer is zero, and it shows no deflection.
Step 4: If the galvanometer shows a deflection, it means there is a current flowing through it.
Step 5: A current flowing through the galvanometer indicates that the two sides of the bridge are not equal in resistance.
Step 6: Therefore, a deflection in the galvanometer means the Wheatstone bridge is unbalanced.

Wheatstone Bridge – A circuit used to measure unknown electrical resistances by balancing two legs of a bridge circuit.
Galvanometer Deflection – Indicates the presence of a current, which occurs when the bridge is unbalanced.
Balance Condition – The condition where the ratio of resistances in the Wheatstone bridge is equal, resulting in no deflection.