Question

Which of the following materials is an insulator against electric current?

A.aluminum foil

B. a copper penny

C. a silver spoon

D.a rubber tube

Answer 1

air rubber tube materials and insulators against electric current

Answer 2

Answer:

Explanation:

A rubber tube is an insulator against electric current. Rubber tube is an good insulator of electricity because its electron in rubber molecules are tightly bound do not flow freely; under the influence of an electric field.

Whereas Copper, Silver and Aluminium molecules are flow freely under the infrequency of an electric field.