Question

In a meter bridge the point D is a neutral point (Fig. 2(EP).4).

A. The meter bridge can have no other neutral. A point for this set of resistance
B. When the jocky contacts a point on meter wire left of D, current flows to B from the wire
C. When the jockey contacts a point on the meter wire to the right of D, current flows from B to the wire through galvanometer
D. When R is increased, the neutral point shifts to left

Answer 1

At neutral point, potential at B and neutral point are same. When jockey is place at to the right of D, the potential drop across AB, which brings the potential of point D less than that of B, hence current shows from B to D.