Question

Find the velocity of charge leading to 1 A current which flows in a copper conductor of cross-section 1cm² and length 10 km. Free electron density of copper = 8.5 x 10²⁸ per m³. How long will it take the electric charge to travel from one end of the conductor to the other?​

Answer 1

$\huge\bold\red{☆Answer☆}$

* See the attachment *

Answer 2

Answer:

Fromi=neAvd

We have vd=1neA

or Vd=18.5×1028×1.6×10−19×10−

=0.735×10−6m/s

=0.735μm/s

t=1vd

=10×1030.735×10−6s

=10×1030.735×106−6×60×60×24×365yr

=431.4yr

Explanation:

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