Understanding Diodes

What is the basic structure of a diode?

• A diode is made of p-type and n-type semiconductor materials forming a p-n junction.

• A diode is a single type of semiconductor material without junctions.

• A diode is made of metal and insulator layers.

• A diode consists of only n-type semiconductor material.

What are the two main types of semiconductor materials used in diodes?

• Gallium and Arsenic

• Lead and Tin

• Silicon and Germanium

• Copper and Aluminum

How does a diode allow current to flow in one direction?

• A diode allows current to flow in one direction by becoming forward-biased when the anode is at a higher voltage than the cathode.

• A diode allows current to flow only when the cathode is at a higher voltage than the anode.

• A diode blocks all current flow regardless of voltage.

• A diode allows current to flow in both directions when the voltage is equal.

What is a Zener diode used for?

• Signal modulation

• Voltage regulation

• Current amplification

• Rectification

Name one application of a light-emitting diode (LED).

• Light bulbs

• Display screens

• Solar panels

• Batteries

What is the function of a rectifier diode?

• To convert AC to DC by allowing current to flow in one direction.

• To regulate voltage levels in a circuit.

• To store electrical energy for later use.

• To amplify electrical signals by increasing voltage.

What type of diode is used for voltage regulation?

• Schottky diode

• Photodiode

• Light-emitting diode

• Zener diode

What is the purpose of a photodiode?

• To amplify electrical signals.

• To store electrical energy.

• To filter specific wavelengths of light.

• The purpose of a photodiode is to convert light into electrical signals.

In which devices would you commonly find diodes?

• Inductors

• Rectifiers, voltage regulators, LED lights, and signal modulators.

• Transformers

• Capacitors

What happens to a diode when it is reverse-biased?

• The diode generates heat and burns out immediately.

• The diode blocks current flow and only allows a small leakage current.

• The diode becomes a short circuit and allows unlimited current flow.

• The diode conducts current freely in both directions.