A copper wire has a square cross section of 6 mm on a side. Thewire is 10 m long and carries a current of 3.6 A. The density offree electrons is 8.5 x 1028/m³. Find the magnitude of (a) thecurrent density in the wire; (b) the electric field in the wire.(c) How much time is required for an electron to travel thelength of the wire? (p, electrical resistivity, is 1.72 x 10³ m.)

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A copper wire has a square cross section of 6 mm on a si wire is 10 m long and carries a current of 3.6 A. The de free electrons is 8.5 x 1028/m³. Find the magnitude of current density in the wire; (b) the electric field in th

A copper wire has a square cross section of 6 mm on a si wire is 10 m long and carries a current of 3.6 A. The de free electrons is 8.5 x 1028/m³. Find the magnitude of current density in the wire; (b) the electric field in th

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Question

A copper wire has a square cross section of 6 mm on a side. The
wire is 10 m long and carries a current of 3.6 A. The density of
free electrons is 8.5 x 1028/m³. Find the magnitude of (a) the
current density in the wire; (b) the electric field in the wire.
(c) How much time is required for an electron to travel the
length of the wire? (p, electrical resistivity, is 1.72 x 10³ m.)

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