A long straight wire of radius a carries a steady current I uniformly distributed through the...
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A long straight wire of radius a carries a steady current I uniformly distributed through the cross section of the wire. A section of a wire carrying current is placed as shown in the figure. a) Calculate the magnetic field when r < a, b) Calculate the magnetic field when r2 a, c) Find the magnitude and direction of the force exerted on the other wire by the magnetic field created by the wire of radius a. 3a 4a 1/2 1/2 2a A long straight wire of radius a carries a steady current I uniformly distributed through the cross section of the wire. A section of a wire carrying current is placed as shown in the figure. a) Calculate the magnetic field when r < a, b) Calculate the magnetic field when r2 a, c) Find the magnitude and direction of the force exerted on the other wire by the magnetic field created by the wire of radius a. 3a 4a 1/2 1/2 2a
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