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The potentiometer wire AB shown in figur...

The potentiometer wire AB shown in figure is 50cm long.When AD=30cm, no deflection occurs in the galvanmeter.Find R.

A

`1Omega`

B

`2Omega`

C

`3Omega`

D

`4Omega`

Text Solution

Verified by Experts

The correct Answer is:
D
`(6)/(R )=(l)/(x-l) (6)/(R )=(30)/(20) rArr R=4Omega`
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