Understanding PN Diodes

What is a PN diode?

• A PN diode is a device that can store electrical energy like a capacitor.

• A PN diode is a type of transistor used for amplifying signals.

• A PN diode is a type of resistor that limits current flow.

• A PN diode is a semiconductor device made of p-type and n-type materials that allows current to flow in one direction.

How does a PN diode work?

• A PN diode requires an external power source to operate.

• A PN diode allows current to flow in one direction when forward-biased and blocks it when reverse-biased.

• A PN diode allows current to flow in both directions.

• A PN diode can amplify signals like a transistor.

What are the main applications of PN diodes?

• Rectification, signal modulation, and light emission.

• Magnetic field sensing, pressure measurement, and chemical analysis.

• Power generation, data storage, and thermal insulation.

• High-frequency communication, voltage regulation, and energy conversion.

What is the difference between a PN diode and a Zener diode?

• A PN diode allows current in one direction; a Zener diode allows reverse current at a specific voltage for regulation.

• A PN diode can operate in both directions; a Zener diode cannot.

• A PN diode has a higher breakdown voltage than a Zener diode.

• A PN diode is used for voltage regulation; a Zener diode is not.

What happens when a PN diode is reverse-biased?

• The diode conducts current and reduces the depletion region.

• The diode generates heat and increases current flow.

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

• The diode blocks current flow and widens the depletion region.