In the circuit shown in figure, points a, b and c are maintained at constant (but may be different) potentials. When a resistance is connected between a and b, no current flows through it, when the same resistance is connected between b and c current flows from c to b.
If Va = Vb =10 V and Vc = 30 V. Then, value of Vd, will be
(a) 165/9 V
(b) 170/11 V
(c) 154/8 V
(d) 185/13 V
