An example of a conductor would be....
a
glass cup
b
air
c
a copper wire
d
rubber covering on a wire
c. a copper wire.
Copper is an excellent conductor of electricity, meaning it allows the flow of electrical current through it easily. This is why it is commonly used in electrical wiring and other electrical applications.
c) a copper wire
The correct answer is c) a copper wire, as copper is a good conductor of electricity.
To identify conductors, you need to understand that conductors are materials that allow the flow of electric current. You can look for materials that are known to have good conductivity, such as metals like copper, silver, and aluminum. Usually, metals are excellent conductors of electricity because they have loosely bound electrons in their atomic structure, which can easily move and carry the electric charge.
In this case, the copper wire is a good example of a conductor because copper has very high electrical conductivity. The free electrons within the copper atoms are able to move freely and carry the electric charge from one point to another.
On the other hand, options a) glass cup and d) rubber covering on a wire are examples of insulators, which are materials that do not allow the flow of electric current. Insulators have tightly bound electrons that are not free to move and carry the electric charge.
Option b) air can act as an insulator under certain conditions, but it can also act as a conductor, especially when it contains moisture or impurities.
So, by understanding the properties of different materials and their ability to conduct electricity, you can identify the correct answer in this case, which is c) a copper wire.