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In the metre bridge, the balancing lengt...

In the metre bridge, the balancing length AB =l=20 cm. The unknown resistance X is equal to

A

`0.25 Omega`

B

`0.8 Omega `

C

` 0.2 Omega `

D

` 0.16 Omega `

Text Solution

Verified by Experts

The correct Answer is:
A
`(X )/(R ) = ( R_(AB))/(R_(BC))`
`(X )/( R ) = ( 1)/(100-1)`
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AAKASH INSTITUTE ENGLISH-CURRENT ELECTRICITY-Try Yourself
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