Electrical conductors and insulators

Materials that conduct current are called [blank_start]electrical conductors[blank_end].

Materials that do not conduct current, which are the opposites of electrical conductors, are called [blank_start]electrical insulators[blank_end].

The device for opening or closing an electric circuit is called a [blank_start]switch[blank_end].

Which of the followings are not electrical conductors?

When the switch in the circuit is pressed, the current flows in it.

The copper wire is not a conductor.

The bulb in the circuit changes chemical energy into light energy and heat energy.

Name the apparatus in the picture.