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A current of flows along the length of a long solid cylindrical conductor. The radius of...

A current of flows along the length of a long solid cylindrical conductor. The radius of the cylinder is 8.5 cm. The current is uniformly distributed through the conductor. If the magnitude of the magnetic field is 2.00 × 10-6 T at a distance of 2.4 cm from the center of the cylinder, what is the size of the current in the wire?

The answer is 3.01 A, but I have no idea what equation they are using. Please show all work

Thank you

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