Seven resistances are connected as shown in the figure. The equivalent resistance between A and B is

Seven resistances are connected as shown in the figure. The equivalent resistance between A and B is

  1. A

    3  Ω

  2. B

    4  Ω

  3. C

    4.5  Ω

  4. D

    5  Ω

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    Solution:

    The given circuit can be simplified as follows:

    Now it is a balanced Wheatstone bridge.
    So,

        RAB=8×88+8=6416=4Ω

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