(i) Find the length of the wire forming circle, `l = 2 pir`
(ii) The effective resistance of a parallel combination is always less than least value of resistance in the combination.
(iii) Take such that the valueof resistance of the segment from the circle has maximum possible resistance.
(iv) `(1)/(R_("effective")) = (1)/(R_(1)) + 1/(R_(2))`
(v) take `R_(1) = R_(2) = (2 "ohm cm"^(-1)) xx (44 cm)/(2)`
(vi) Find `R_(eff)` from (2).
(vii) `22 Omega`