Physics-Wheatstone Bridge
NEET Physics Wheatstone Bridge MCQ Question
Type: MCQ-numerical-Hard-Class 12
In a balanced Wheatstone bridge, if the resistors are arranged such that R1 = 10 Ω, R2 = 5 Ω, and R3 = 20 Ω, what should be the resistance of R4 to maintain the balance?
A
4 Ω
B
10 Ω
C
8 Ω
D
5 Ω
Correct Answer
Option A
Detailed Explanation
For a balanced Wheatstone bridge, the condition R1/R2 = R3/R4 must be satisfied. Here, 10/5 = 20/R4, which gives R4 = 4 Ω.
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