Conductor or Insulator?

What type of material allows electric current to flow easily through it?

• Insulator

• Conductor

• Resistor

• Semiconductor

Based on the experiments, which of these materials is an electrical insulator?

• Copper

• Aluminum

• Wood

• Saltwater

Which of the following materials was shown to be a conductor of electricity?

• Plastic

• Wood

• Pure water

• Saltwater

What change occurs in water's electrical conductivity when salt is added to it?

• It becomes a better insulator

• It becomes a conductor

• Its conductivity remains the same

• It becomes a semiconductor