If the Wheatstone bridge is unbalanced, what happens to the current through the

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Question: If the Wheatstone bridge is unbalanced, what happens to the current through the galvanometer?

Options:

Correct Answer: It increases.

Solution:

In an unbalanced bridge, there is a potential difference across the galvanometer, causing current to flow.

If the Wheatstone bridge is unbalanced, what happens to the current through the galvanometer?

If the Wheatstone bridge is unbalanced, what happens to the current through the galvanometer?

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: Recognize that when the bridge is balanced, there is no current flowing through the galvanometer.
Step 4: Learn that when the bridge is unbalanced, the resistances are not equal, which creates a difference in voltage.
Step 5: This difference in voltage across the galvanometer causes current to flow through it.
Step 6: Conclude that in an unbalanced Wheatstone bridge, the current through the galvanometer increases.

Wheatstone Bridge – A circuit used to measure unknown electrical resistances by balancing two legs of a bridge circuit.
Galvanometer – An instrument for detecting and measuring small electric currents.
Potential Difference – The difference in electric potential between two points, which drives current through a circuit.