1 answer

1. When a current flows in an aluminum wire of diameter 4.67 mm, the drift speed...

Question:

1. When a current flows in an aluminum wire of diameter 4.67 mm, the drift speed of the conduction electrons is 0.000135 m/s. How many electrons are flowing past a given point each second? The conduction electron density in aluminum is 6.00×1028 m−3.

2. When a current flows in an aluminum wire of diameter 2.15 mm, the drift speed of the conduction electrons is 0.000249 m/s. How many electrons are flowing past a given point each second? The conduction electron density in aluminum is 6.00×1028 m−3.


Answers

Electric Current I = nAv​​​​d e

And electric current I = charge flowing / time = Q/t

But charge Q = Ne from quantization of charge

= Integral of fundamental charge

a PAGE DATE diometer d = 4.67 mm iraclius ra da. Area of cross section Ach d² 4 - 3.1483.672 mm2 4 = 10.57x10 m2 drift veloci​​​​​​Ans. 8.6 *10^19 electrons.

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