Hour many conduction electrons are there in a 500 mm diamete

Hour many conduction electrons are there in a 5.00 mm diameter got wire that is 40.0 cm long? How far must the sea of electrons in the wire move to deliver -24.0 nC of charge to an electrode? Express your answer with the appropriate units.

Solution

1 C = 6.242 * 10¹⁸ electrons

4.63 × 10²³ electrons x 1 C / 6.242 * 10¹⁸ = 74174 coulombs

24 nC / 74174 = 3.24 * 10^-13

As they are evenly distributed along 40 cm

= 3.24 * 10^-13 * 40 cm

= 1.29 * 10^-13 m