Question

Which of the Materials are insulators? (select all that apply)

a. Mechanical Pencil lead
b. Glass
c. Iron
d. Silver
e. Wood
f. Brass
g. Plastic
h. Copper
I. Yarn

Answer 1

I believe all the insulators would be glass, wood, plastic, and yarn.

But I’m not entirely sure if mechanical pencil lead is an insulator or conductor.

Hope this helps.