I believe its E.
Traveling through metal, electrons can not go the speed of light
Answer:
E. at none of the above speeds
Explanation:
When current flowing through the metal then the speed of electrons in metal is not very high.
This speed of all electrons inside metal is opposite the the electric field which is due to the applied potential difference on the metal by external battery.
As we know that
[tex]\Delta V = i R[/tex]
here for the current flowing in the metal the all the free electrons will move at drift speed which is given as
[tex]i = neAv_d[/tex]
here speed of electrons will be
[tex]v_d[/tex] = drift speed
n = number density of electrons
A = crossectional area
e = charge of an electron
in general this speed is very small and approximately of order cm/s
