In the shown arrangement of the experiment of the meter bridge if $AC$ corresponding to null deflection of galvanometer is $x$, what would be its value if the radius of the wire $AB$ is doubled
A$x$
B$x/4$
C$4x$
D$2x$
IIT 2003, Medium
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A$x$
a (a) Balancing length is independent of the cross sectional area of the wire.
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