A B C is a current carrying conductor carrying a current i = 2A. If length of the segment AB is 33m, then what should be the length of BC, so that net force on the conductor ABC becomes zero?

A B C is a current carrying conductor carrying a current i = 2A. If length of the segment AB is 33m, then what should be the length of BC, so that net force on the conductor ABC becomes zero?

  1. A

    6 m

  2. B

    4 m

  3. C

    53 m

  4. D

    43 m

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    Solution:

    F=i le×B

    Where le = Ac = equivalent length. It is evident that F is zero when le and B are parallel (as shown in the figure).

    BC=AB/cos300=3332 m =6 m

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