Question

Electric insulators have a high flow of heat and electricity.
Electric insulators have a high flow of heat and electricity.

Electric insulators are the best heat conductors.
Electric insulators are the best heat conductors.

Charges within electric insulators do not readily move.
Charges within electric insulators do not readily move.

Electric charges move freely in electric insulators.
Electric charges move freely in electric insulators.

Answer 1

Those statements are inconsistent. Corrected versions and brief explanations:

1. "Electric insulators have a high flow of heat and electricity." — False.
- Electric insulators have a low flow of electricity (they resist electric current). They also usually have low thermal conductivity (they are poor heat conductors), so they slow heat flow.

2. "Electric insulators are the best heat conductors." — False.
- Most electrical insulators are poor thermal conductors. (Exception: diamond is an electrical insulator but an excellent thermal conductor.)

3. "Charges within electric insulators do not readily move." — True.
- In insulators electrons are tightly bound (large band gap), so free charge carriers are absent and current cannot flow easily. Insulators can be polarized (charges shift slightly) but not conduct steady current.

4. "Electric charges move freely in electric insulators." — False.
- Free charge motion is a property of conductors (metals, some semiconductors), not insulators.

Examples: common electrical insulators — rubber, glass, plastic, dry wood. Semiconductors lie between conductors and insulators.