Conductors and Insulators: The Flow of Electricity Explained

The video tutorial explains the concepts of conductors and insulators in electricity. Conductors allow electric current to flow easily due to their free electrons, with metals like silver and copper being prime examples. Good conductors have low resistance, which helps in saving electricity. Insulators, on the other hand, prevent the flow of electric current and are used for safety purposes. Materials like glass, rubber, and plastic are common insulators. The video emphasizes the importance of using appropriate materials for efficient and safe electrical systems.

What is the movement of electrons in a circuit called?

• Electric resistance

• Electric current

• Electric charge

• Electric potential

Which material is known for providing the easiest path for electric current?

• Conductors

• Resistors

• Semiconductors

• Insulators

Why is copper commonly used in home wiring?

• It is lightweight

• It is non-conductive

• It is the most conductive metal

• It is cheaper and a good conductor

What happens if a high resistance conductor is used?

• It will conduct electricity more efficiently

• It will cool down the circuit

• It will become very hot and waste electricity

• It will not conduct electricity at all

Which metal is the most conductive but not commonly used due to cost?

• Aluminum

• Silver

• Copper

• Gold

Which material is used in long electric transmission lines due to its lightweight?

• Aluminum

• Silver

• Gold

• Copper

What is an electrical insulator?

• A material that allows electric current to flow freely

• A material that blocks electric current

• A material that enhances electric current

• A material that stores electric current

Which of the following is a good insulator?

• Copper

• Aluminum

• Silver

• Glass

Why are insulators used to cover conductors?

• To enhance the flow of electricity

• To prevent electric shock

• To increase the resistance

• To conduct more electricity

What role does insulation play in electrical systems?

• It increases the heat gain

• It limits heat gains and prevents excessive compressor load

• It enhances the electric current

• It decreases the system's efficiency