The resistances in the two arms of the meter bridge are 5 
and 
, respectively. When the resistance R is shunted with an equal resistance, the new balance point is at 
. The resistance R is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
There are two cases
Cases-I: For balanced point of meter bridge, 
… (i)
Cases-II: When 
is shunted with equal resistance i.e. R
… (ii)
From Eqs. (i) and (ii), we get
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