Explain the difference between electrical conductors and electrical insulators. Provide two examples for each category.
Electrical Conductors: These are materials that allow electric current to pass through them easily. They have free electrons that can move and carry electrical charge from one point to another. Examples: Copper, Iron, Aluminium, Graphite (pencil lead).
Electrical Insulators: These are materials that do not allow electric current to pass through them easily. They do not have free electrons to carry charge, thereby resisting the flow of electricity. Examples: Plastic, Rubber, Wood, Glass.
Explanation
Tests the ability to define and differentiate between conductors and insulators based on their property of allowing or resisting current flow. Requires at least two correct examples for each category.