I WONDER - What Is A Semi-Conductor?

The video tutorial explains semiconductors, materials that control electrical currents in one direction. Silicon is highlighted as the most commonly used semiconductor in modern electronics, found in devices like mobile phones, tablets, and computers.

What is a key characteristic of semiconductors?

• They can conduct electricity in both directions.

• They are used only in high-power applications.

• They can control currents in one direction.

• They are poor conductors of electricity.

Which material is the most widely used semiconductor in electronics today?

• Germanium

• Gallium

• Silicon

• Copper

Why is silicon preferred in electronic devices?

• It is the cheapest material available.

• It is abundant and has suitable electrical properties.

• It can be used in both high and low temperatures.

• It is the most effective at controlling current.

Which of the following devices commonly use silicon?

• Mobile phones

• Washing machines

• Refrigerators

• Televisions

In which of these devices is silicon not typically used?

• Tablets

• Microwaves

• Computers

• Mobile phones