Question

conductors block electric current. true false 1 point copper is a good conductor. true false 1 point insulators allow electrons to move freely. true false 1 point aluminium is used in power lines. true false 1 point

Explanation:

1. Conductors have free electrons that enable electric current flow, so they do not block current.
2. Copper has high electrical conductivity, making it an excellent conductor.
3. Insulators have tightly bound electrons, preventing free electron movement.
4. Aluminum is lightweight and conductive, commonly used in overhead power lines.

Answer:

1. Conductors block electric current.: False
2. Copper is a good conductor.: True
3. Insulators allow electrons to move freely.: False
4. Aluminum is used in power lines.: True