In a Wheatstone bridge, if the galvanometer shows a deflection, what does it indicate?

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Q: In a Wheatstone bridge, if the galvanometer shows a deflection, what does it indicate?

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

Steps: 6

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 used to detect and measure small electric currents.
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 legs of the bridge are not balanced.
Step 6: The unbalance means that the ratios of the resistances in the two legs of the bridge are not equal.