In the shown arrangement of the experiment of the meter bridge, if $A C$ corresponding to null deflection of galvanometer is $x$ , what would be its value if the radius of the wire $A B$ is doubled [2003]

Question

Smart Achievers · Accepted Answer

(1)

In case of meter bridge at null point

$x$

If radius of the wire is doubled, then the resistance of AC will change and also the resistance of CB will change. But since $\frac{R_{1}}{R_{2}}$ does not change so, $\frac{A C}{C B}$ should also not change at null point. Therefore the point C does not change.

Solution

Q.
In the shown arrangement of the experiment of the meter bridge, if $A C$ corresponding to null deflection of galvanometer is $x$ , what would be its value if the radius of the wire $A B$ is doubled [2003]

1 $x$

2 $\frac{x}{4}$

3 $4 x$

4 $2 x$

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Solution

Q. 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 [2003]

1 x

2 x4

3 4x