The equivalent resistanc between points A and D is (given wire used is idle)
(a) Zero
(b) R
(c) 2R
(d) of these
Correct option**(c) 2R**
Explanation:
As the wire is idle so resistor between B and C has same potential so it is useless.
∴ Equivalent figure is
∴ Equivalent resistance between A and D = 2R
