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In a Wheatstone bridge (see fige ) Res...

In a Wheatstone bridge (see fige ) Resitances P and Q are approximately equal .When `R= 400 Omega` the bridge is blanced .on is inerchanging P and Q ,the value of R, for balance is 405 `Omega ` .The value of X is close to :

A

`(9)/(5)m`

B

`(24)/(5)m`

C

`(9)/(4)m`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
(B)
`(R )/(2) = (2u^(2) sin theta cos theta)/(2g) = ((100)((3)/(5))((4)/(5)))/(10) = (24)/(5) m`
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