NEET Physics Wheatstone Bridge MCQ Question
Which of the following statements about the Wheatstone bridge and its operation is correct?
The balance condition of a Wheatstone bridge is achieved when the ratio of the resistances is equal, resulting in zero current through the galvanometer.
Increasing one of the resistances in a Wheatstone bridge will always cause the current through the galvanometer to increase.
The Wheatstone bridge can only be used to measure resistances in series circuits.
The Wheatstone bridge operates independently of the lengths of the resistors used in the circuit.
Correct Answer
Detailed Explanation
The correct statement is that the balance condition for a Wheatstone bridge occurs when the ratio of the resistances is equal, leading to no current through the galvanometer. This reflects the balance condition derived from Kirchhoff's rules.
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