Question

which statement correctly describes plastic?
a. it has a low resistivity and prevents charges from moving freely.
b. it has a high resistivity and prevents charges from moving freely.
c. it has a low resistivity and allows charges to move freely.
d. it has a high resistivity and allows charges to move freely.

Explanation:

Plastic is an insulator. Insulators have high resistivity. High resistivity means it prevents charges from moving freely (as opposed to conductors which have low resistivity and allow charge movement).

Answer:

B. It has a high resistivity and prevents charges from moving freely.