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In a meter bridge, the value of resistan...

In a meter bridge, the value of resistance in the resistance box is `10Omega`. The balancing length is `l_(1)=55 cm`. Find the value of dunknown resistance.

Text Solution

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`Q=10Omega`
`(P)/(Q)=(l_(1))/(100-l_(1))=(l_(1))/(l_(2))`
`P=Q xx (l_(1))/(100-l_(1))`
`P=(10xx55)/(100-55) rArr P=(550)/(45)=12.2Omega`
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