The equivalent resistance between the point `P` and `Q` in the network given here is equal to (given `r = (3)/(2) Omega)`

Options

A. `1//2Omega`
B. `1Omega`
C. `3//2Omega`
D. `2 Omega`

Answer

2

Explanation

This is, infact, Wheatstone's net. When a cell is applied between P and Q, potentials of A and C become equal and no current flow along AC. Thus the resistances AB and BC becom e ineffective.