In an experiment of meter bridge, a null point is obtained at the centre of the bridge wire. When a resistance of 10 ohm is connected in one gap, the value of resistance in other gap is

In an experiment of meter bridge, a null point is obtained at the centre of the bridge wire. When a resistance of 10 ohm is connected in one gap, the value of resistance in other gap is

  1. A

    10   Ω

  2. B

    5   Ω

  3. C

    15   Ω

  4. D

    500  Ω

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    Solution:

    Meter bridge is balanced, therefore

    PQ=RSor  1=10SS=10  Ω

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