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MHT CET20226 Aug 2022Morning ShiftPhysicsCurrent ElectricityActual

The resistance in the left and right gaps of a meter bridge are 10 and 30 respectively. If the bridge is balanced, then the distance of the null point from the center of the wire is

Options

  1. A20 ~cm
  2. B30 ~cm
  3. C25 ~cm
  4. D40 ~cm

Correct answer

C. 25 ~cm

Step-by-step solution

The given ratio of resistors is: P Q = 10 30 = 1 3 = l₁ l₂ l₂=3 l₁ Since, l₁+3 l₁=100 ~cm l₁=25 ~cm

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