Conductors and insulators

The video explains the properties of silver and its use in jewelry and electrical circuits. It discusses how metals like copper, aluminium, and iron are conductors of electricity, with silver being the best but most expensive. The video also covers non-metals like plastic, rubber, and wood, which act as insulators, preventing the flow of electricity and ensuring safety by coating conductive materials.

Which metal is highlighted for its use in both jewelry and electrical circuits due to its conductivity?

• Copper

• Silver

• Iron

• Gold

What term is used to describe materials that allow electricity to pass through them?

• Capacitors

• Conductors

• Resistors

• Insulators

Which metal is commonly used in power lines despite not being the best conductor?

• Silver

• Iron

• Copper

• Aluminum

What is the primary function of insulators in electrical circuits?

• To conduct electricity

• To resist the flow of electricity

• To decrease electrical resistance

• To increase electrical flow

Why is plastic used to coat copper wires?

• To reduce weight

• To prevent rust

• To enhance conductivity

• To provide insulation