Answer:
[tex]2\times10^5[/tex]m
Explanation:
1 second = 1000 millisecond, so if within 1 second a bit could travel a distance of [tex]2\times10^8[/tex]m through a copper wire then within a millisecond (a thousandth of a second) it should be able to travel through a distance of
[tex]\frac{2\times10^8}{1000} = 2\times10^5[/tex]m