Two conductors AB and CD are connected between two parallel resistors in such a way that no current flows through them. Then a wire is connected between E and F. Now choose the correct statement.

Two conductors AB and CD are connected between two parallel resistors in such a way that no current flows through them. Then a wire is connected between E and F. Now choose the correct statement.

  1. A

    There is no current in EF.

  2. B

    Current flows from E to F

  3. C

    Current flows from F to E.

  4. D

    None of the above

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    Solution:

    As there is no current through AB, all the points of AB are at the same potential, say V1. For the same reason, all the points of CD are at the same potential, say V2. But V1 > V2 because current is flowing from A to C or B to D. Therefore, VE > VF. This is why on connecting E and F by a wire, current will flow from E to F. 

    Hence choice (2) is correct.

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