Question

A 0.300-mm-diameter silver wire carries a 10.0 mA current.

Part A What is the electric field in the wire? Express your answer with the appropriate units.

Part B

What is the electron drift speed in the wire?

Express your answer with the appropriate units.

Answer 1

Condictivity of silver = 6.3 × 10⁷ =  

Also

So electric field = 1.764 x 10^-3 V/m

Electron drift speed is found as

Free electron density of silver = 5.89 x 10²⁸ m^-3

So drift speed = I/(e n A) = 1.18 x 10⁵ m/s

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