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A 5.30-ìC charge is moving with a speed of 9.30 x 104 m/s parallel to a very long, straight wire. The wire is 6.60 cm from the charge and carries a current of 87.0 A. Find the magnitude of the force on the charge.

  • Physics - ,

    The magnetic field at the charge location is
    B = mu_o* I/(2*pi*R)

    where mu_o is the permeability of free space, 4*pi*10^-7 Weber/(amp*meter)

    The force on the charge is
    q V B
    since V and B are in perpendicular directions

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