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A cylindrical wire of radius 2.0 mm carries a current of 2.5 A. The potential difference between points on the wire that are 46m apart

A cylindrical wire of radius 2.0 mm carries a current of 2.5 A. The potential difference between points on the wire that are 46m apart is 3.7 V.

a) what is the electric field in the wire?

b) What is the resistivity of the material of which the wire is made?

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