1.

In a meter bridge the point Dis a neutral point as shown in figure.

Answer»

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

Solution :(A, C)
In balanced condition of bridge potential at point 8 and null point (D) will be equal. When jokey key is right of point D then VOLTAGE drop in AB wlll be more than voltage drop in AD. Hence, current will fl.ow from B to D.


Discussion

No Comment Found

Related InterviewSolutions