Physics-Wheatstone Bridge
NEET Physics Wheatstone Bridge MCQ Question
Type: MCQ-conceptual-Hard-Class 12
In a Wheatstone bridge circuit, which of the following statements is correct regarding the current and resistance relationships?
A
When the bridge is balanced, the ratio of resistances satisfies R1/R2 = R3/R4.
B
The total current flowing through the galvanometer is equal to the sum of currents in the other branches.
C
The balance condition can only be achieved if all resistances are equal.
D
The current through the galvanometer is non-zero when the bridge is balanced.
Correct Answer
Option A
Detailed Explanation
According to the balance condition of a Wheatstone bridge, the relationship R1/R2 = R3/R4 must hold true for the galvanometer to show zero deflection, indicating a balanced state. This aligns with the principles discussed in the NCERT context.
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