Question

All of the following are examples of materials except _____.

Answer 1

I would thing the answer would be pigments because the other stuff there is a lot of used for.

Answer 2

Answer:

The answer to the question is Brushes

Explanation:

Brushes are refereed to as devices that conduct current between a moving parts and stationary wires. they are contacts (sliding)  that are used in broadcasting  current from a static to a rotating part of a motor.

They can also be defined as a carbon brush that has contacts that are electrical wires that are stationary and its moving parts.