In a meter bridge shown in the figure, the balance point is found to be 40 cm from end A. If a resistance of 10 Ω is connected in series with R, balance point is obtained 60 cm from A. Calculate the values of R and S.
When balance point is at 40 cm, we have
When a resistance of 10 Ω is added in series with R,Then, equivalent reistance at R is R′=R+10Now, balance point is at 60 cm.So, we have
Solving (i) and (ii), we get