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In a meter bridge the point $D$ is neutral point as shown in the figure.
  • A
    The meter bridge can have no other neutral point for this set of resistances
  • BWhen the jockey contacts a point on meter wire left of $D$, current flows to $B$ from the wire
  • CWhen the jockey contacts a point on the meter wire to the right of $D$, current flows from $B$ to the wire through galvanometer
  • DWhen $R$ is increased, the neutral point shifts to left
Medium
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