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Physics-Wheatstone Bridge

NEET Physics Wheatstone Bridge MCQ Question

Type: MCQ-numerical-Hard-Class 12

In a Wheatstone Bridge with resistors R1 = 100 Ω, R2 = 150 Ω, and R3 = 200 Ω, determine the value of the unknown resistor R4 that will balance the bridge.

A

133 Ω

B

300 Ω

C

75 Ω

D

250 Ω

Correct Answer

Option D

Detailed Explanation

Using the balance condition R1R2=R3R4\frac{R1}{R2} = \frac{R3}{R4}, substituting R1=100 Ω,R2=150 Ω,R3=200 ΩR1 = 100 \text{ Ω}, R2 = 150 \text{ Ω}, R3 = 200 \text{ Ω}, we find R4=250 ΩR4 = 250 \text{ Ω}.

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