A copper wire has a square cross section 2.7 on a side. the, Ask an Expert

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Q. A copper wire has a square cross section 2.7 on a side. The wire is 3.8 long and carries a current of 4.0 . The density of free electrons is 8.5*10^28 m^-3.

Find the magnitude of the electric field in the wire.

How much time is required for an electron to travel the length of the wire?

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Category:- Physics
Reference No.:- M9276088

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