Read the list of substances. Air, Copper, Glass, Gold, Wood Which substances have high electrical conductivity?

Air and Copper

Air and Glass

Copper and Glass

Copper and Gold

Copper and gold.

Explanation:

Conductivity may be defined as the the ability of the metals to conduct electricity. The metals can conduct electricity if they have free electrons and these free electrons will conduct electricity.

Copper and gold are the electropositive element that contains the electrons are known to conduct electricity. These elements have the free electrons and the movements of these electrons causes the conductivity of the electric current.

Thus, the correct answer is option (4).

D - Copper and Gold. They both are used throughout in our moderen techonolgy; such as cell phones, computers, refrigerators, etc ...

Good luck!