The number of free electrons per 10 mm of an ordinary wire copper wire is about 2 1021 If the average drift speed of the

Question

The number of free electrons per 10 mm of an ordinary wire copper wire is about 2 1021 If the average drift speed of the electrons is 0 25 mm sec then the electric current flowing through the wire is O 80 A O 0 08 A O 0 8 A O 8A Marks 4 1

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