Question

Which of the following is a good insulator?


rubber

germanium

silicon

copper

Answer 1

Hi there!

I believe the answer would be ~ Rubber.

Hope this helps!

~DL

Answer 2

Hello There :-)

Answer: Rubber (A)

Reason: Rubber contains things that will cause the electrons to slow down and eventually prevent them from moving at all, which is an insulators goal.

I hope I helped
-Chris