In a meter bridge, null point is at `l=33.7cm`, when the resistance `S` is shunted by `12Omega` resitance the null point is found to be shifted by a distance of `18.2 cm`. The value of unknown resistance `R` should be
A
`13.5Omega`
B
`68.8Omega`
C
`3.42Omega`
D
None of these
Text Solution
Verified by Experts
The correct Answer is:
B
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