NEET Physics Wheatstone Bridge MCQ Question
Which of the following statements about the Wheatstone Bridge is correct?
The balance condition is achieved when the ratio of the resistances is equal, leading to no current through the galvanometer.
The Wheatstone Bridge can only be used to measure unknown capacitances.
The bridge is balanced when the currents in the opposite branches are equal, regardless of the resistances.
The Wheatstone Bridge requires an external power source to function properly in all cases.
Correct Answer
Detailed Explanation
The balance condition for the Wheatstone Bridge is described by the equation relating the four resistors, indicating that no current flows through the galvanometer when the ratios of the resistances are equal. This is the fundamental principle behind its operation.
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