Conductivity and Electrical Resistance

What are Conductors?

Materials that allow the flow of electric current with low resistance. Examples include metals such as copper, aluminum and silver

What are Insulators?

Materials that resist the flow of electric current. Examples include plastic and wood

Why is Copper an excellent conductor?

Because of its low electrical resistance, and it is widely used in electrical wiring and electronic devices

Plastic and Wood:

Are both insulators, meaning they resist the flow of electric current

What are Plastic and Wood used for?

Protection and insulation of electrical components

Aluminum is a good conductor, but why is it not as good as copper?

It has only 60% of the conductivity of copper, it is lighter in weight and less expensive, making it a popular choice for some applications