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Two wires carrying equal currents i each...

Two wires carrying equal currents i each, are placed
perpendicular to each other, just avoiding a contact. If
one wire is held fixed and the other is free to move under
magnetic forces, what kind of motion wil results?

Answer

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Knowledge Check

  • If two straight current carrying wires are kept perpendicular to each other almost touching then the wires

    A
    Attract each other
    B
    Repel each other
    C
    Remain stationary
    D
    Become parallel to each other

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    The wires will attract each other
    B
    The wires will repel each other
    C
    There will be no force between the wires
    D
    There will be a force between the wires only at the moment when the current is switched ON or OFF

  • Three infinitely long wires, each carrying a current 1A, are placed such that one end of each wire is at the origin, and, one of these wires is along x-axis, the other along y-axis and the third along z-axis. Magnetic induction at point (-2 m, 0, 0) due to the system of these wires can be expressed as

    A
    `(mu_(0))/(4 pi)(hat(j)+hat(k))`
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    `(mu_(0))/(4 pi)(hat(j)-hat(k))`
    C
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    D
    `(mu_(0))/(8 pi)(hat(j)+hat(k))`

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