Question

$\huge\sf{Question}$
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?

Don't Spam​

Answer 1

Answer:

Fromi=neAvd

We have vd=1neA

or Vd=18.5×1028×1.6×10−19×10−4

=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

Answer 2

Answer:

0.735u m/s, 431yr​

Explanation:

Hope Helps :)