ASVAB Electronics Information Practice Test 432950

Question 2 of 5
Conductive Materials

All conductors have resistance and the amount of resistance varies with the element. But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper. A balance needs to be struck between the electrical qualities of a material and its cost and durability.

Which of these materials is not a good conductor of electricity?

copper

gold

tin

air