Question

There are 8.5 x 1028 free electrons in one
cubic metre of copper. When the copper
conductor is worked at 155 A/cm² the
velocity of the axial drift will be​

Answer 1

Answer:

=1 × 10^−4

Explanation:

J = nev

v = 1 / ne

= (1 /7.4 × 10^−7) ×8.4×10^28

= 10^−2 / 8.4 × 1.6 × 7.4

=1 × 10^−4