Q.17. An Infinite ladder network of resistance is constructed with 1$\Omega$ and 2$\Omega$ resistances as shown in the figure. The 6 V battery between A and B has negligible resistance. The effective resistance battery between A and B is :-

(1) 1$\Omega$
(2) 2$\Omega$
(3) 3$\Omega$
(4) 5/8$\Omega$