Semiconductor

The video explains the difference between conductors and insulators, highlighting their roles in controlling electric currents without physical movement. It further discusses the significance of semiconductors, which are small, reliable, and cost-effective, forming the backbone of modern electronics.

What is the primary difference between a conductor and an insulator?

• Conductors allow electric current to flow freely, while insulators do not.

• Insulators allow electric current to flow freely, while conductors do not.

• Neither conductors nor insulators allow electric current to flow freely.

• Both conductors and insulators allow electric current to flow freely.

How do semiconductors control electric currents?

• By blocking all electric currents.

• By controlling and switching currents without physical movement.

• By using physical movement to switch currents.

• By allowing currents to flow in only one direction.

What is a key advantage of semiconductor devices over traditional mechanical switches?

• They are more expensive to produce.

• They can switch currents without physical movement.

• They are less reliable than mechanical switches.

• They require physical movement to operate.

Why are semiconductors important in modern electronics?

• They are unreliable but cheap.

• They are small, reliable, and can be produced cheaply.

• They are large and require significant power.

• They are expensive but reliable.

Which of the following best describes the role of semiconductors in electronics?

• They form the foundation of modern electronics due to their efficiency.

• They are used only in large-scale industrial applications.

• They are rarely used in modern devices.

• They are primarily used for decorative purposes.