What is end error in a metre bridge ? How is it overcome ? The resistances in the two arms of the metre bridge are `R=5Omega` and S respectively.
When the resistance S is shnted with an equal resistance, the new balance length forund to be 1.5 `l_(1)`, Where `l_(1)` is the initial balancing length. Calculate the value of S.

Explanation

According to the quesition
`R/S=P/Q=I/(100-1)`
`5/S=I_(1)/(100-1)" ....(1)"`
`5/("S/2")=(1.5I_(1))/(100-1.5I_(1))`
`10/S=(1.5I_(1))/(100-1.5I_(1))" ....(2)"`
Solving equation no (1) and (2)
`I_(1)=100/3cm`
`S=10Omega`