In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure.

Options

A. 2
B. 4
C. 1
D. 3

Explanation

Observation should match the condition of balanced wheatstone bridge arrangement
`therefore R/l=X/((100-1)) implies X=R/l times (100-l)`
From Reading 1: From Reading 2
`X=1000/60 times (100-60)=666.67 Omega , x=100/13 times (100-13) =669.23 Omega`
From Reading 3, From Reading 4
`X=10/1.5 times (100-1.5)=656.67 Omega X=1/1 times (100-1)=99Omega`
So, reading (4) gives the most in consistent result.