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  • The experiment of the meter bridge if AC correspondery to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is 3.5 times of o

The experiment of the meter bridge if AC correspondery to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is 3.5 times of original.

Option: 1

x


Option: 2

2x


Option: 3

4x


Option: 4

x/4


Answers (1)

best_answer

At null point

\frac{R_1}{R_2}=\frac{R_3}{R_4}=\frac{x}{(100-x)}

if radius of the wire is 3.5 times, then the resistance of AC will change and also the resistance of CB will change. But \frac{R_1}{R_2} does not change so, \frac{R_3} {R_4} should not change at null point. 

Posted by

shivangi.bhatnagar

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