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mark asked in Science & MathematicsPhysics · 4 years ago

Physics help.?

A wire loop of radius a, carrying a current I, placed in a perpendicular magnetic field pointing inwards. Find the force of compression in the wire. Please explain in detail. Thanks in advance

1 Answer

  • 4 years ago

    dF = I B dL

    integrating from L = 0 to L = 2 π a

    F = 2 π a I B


    F = - dU/dr

    U = - m B = - I S B = - I π r^2 B

    F = 2 π r I B

    being r = a

    F = 2 π a I B

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