Electric Conductors and Insulators
Key Notes :
Electric Conductors:
Definition: Materials that allow electricity to flow through them easily are called conductors.
Examples: Metals like copper, aluminum, silver, and gold are good conductors.
Properties:
- They have free electrons that move easily.
- They allow electricity to pass through without much resistance.
Applications:
- Wires and cables in electrical circuits use conductors.
- Electrical appliances like fans, lights, and computers use conductors for efficient energy flow.
Electric Insulators:
Definition: Materials that do not allow electricity to flow through them easily are called insulators.
Examples: Rubber, plastic, wood, glass, and ceramics are good insulators.
Properties:
- They do not have free electrons to carry electrical current.
- They prevent electric shock by blocking the flow of electricity.
Applications:
- Electric wires are often covered with plastic or rubber to prevent electrical leakage.
- Handles of electrical tools are made of insulating materials for safety.
Difference between Conductors and Insulators:
Summary:
- Conductors: Materials that conduct electricity (e.g., metals like copper).
- Insulators: Materials that block electricity (e.g., rubber, plastic).
- Insulators are used to prevent accidents and ensure the safe use of electricity. Conductors are essential for transferring electricity in electrical devices.
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