Figure`6.52` shows a balanced wheatstone net. Now, it is disturbed by changing `P` to `11 Omega`. Which of the following steps will not bring the bridge to balance again?

Options

A. increasing `R` by `2 Omega`
B. increasing `S` by `20 Omega`
C. increasing `Q `by `10 Omega`
D. making product `RQ = 2200 (Omega)^(2)`

Answer

B

Explanation

`P//Q = R//S`. If `P` is increased, then either `R` or `Q` should be increased or `S` should be decreased.