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Decreases in number of turns of coil in ...

Decreases in number of turns of coil in tangent galvanometer is

A

to decrease sensitivity

B

to decrease resistance of galvanometer

C

to increase a field at centre of coil

D

can not be predicted

Text Solution

Verified by Experts

The correct Answer is:
A
`S=(cos^2theta)/(K)=(cos^2thetamu_0n)/(2a B_H)`
`therefore` As n decreases S decreases .
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