FYKOS Year 29 Series 5 Problem 1 — let it flow · FYKOS 29 #29.5.1

Physics · mechanics · electromagnetism

Problem

Thin wire with resistance

R=100mΩ

and length

l=1\;\mathrm{m}

, that is connected to the source of DC with voltage

U=3V

, contains in its volume

N=10^{22}

free electrons, which contribute to the electric current. Determine what is the average speed (more accurately net velocity) of these electrons in the wire.

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