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o 4-14 Problems: 4.2 A potential difference of 100 V is maintained across the two ends of a nickel wire of radius 2 mm and le

 A potential difference of 100 V is maintained across the two ends of a nickel wire of radius 2 mm and length 10 m. Calculate (a) the electric field intensity, (b) the current density, and (c) the electric current through the wire


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