Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

Given below is an arrangement of resistors in the form of a Wheatstone Bridge. Find the value of x so that the galvanometer holds zero reading.

Options:

1 Ω

2 Ω

3 Ω

4 Ω

Correct Answer:

2 Ω

Explanation:

The correct answer is Option (2) → 2 Ω 

for $G=0$

$\frac{16}{X}=\frac{4}{1/2}$ [Property of Wheatstone Bridge]

$\frac{16}{X}=8$

$X=\frac{16}{8}=2Ω$