AP EAMCET Engineering 2018 Apr 22 Shift 1 Paper

A battery of emf 10 V is connected to a uniform wire AB of 1 m length and having a resistance of 10 Ω in series with a 10 Ω resistor as shown in the figure. Two cells of emf 2 V and 3 V having internal resistances 2 Ω and 3 Ω respectively are connected as shown in the figure.If the galvanometer shows null deflection at point J on the wire, die distance of point J from the point B is_______