Find the magnitude of the current density in the wire

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Reference no: EM13492131

A copper wire has a square cross section 2.5 mm on a side. The wire is 3.2 m long and carries a current of 4.6 A. The density of free electrons is 8.5 1028/m3.

(a) Find the magnitude of the current density in the wire.

A/m2

(b) Find the magnitude of the electric field.

V/m

Reference no: EM13492131

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