PN Junction Diode Quiz

How is a PN junction diode formed?

• By joining two P-type semiconductors

• By joining a P-type semiconductor with an N-type semiconductor

• By using only a P-type semiconductor

• By joining two N-type semiconductors

What are the materials used to form a PN junction diode?

• Gold and Silver

• Glass and Plastic

• Copper and Aluminum

• P-type semiconductor and N-type semiconductor

What happens when a P-type material and an N-type material are brought in contact to form a PN junction diode?

• It creates a superconductive region and stops the flow of current

• It creates a parallel circuit and allows the flow of current in both directions

• It creates a depletion region and allows the flow of current in one direction only.

• It creates a magnetic field and allows the flow of current in both directions

Explain the process of diffusion in the formation of a PN junction diode.

• Diffusion is the transfer of heat from one side of the PN junction diode to the other, leading to its formation.

• Diffusion is the movement of charge carriers from an area of high concentration to an area of low concentration, leading to the formation of a PN junction diode.

• Diffusion is the movement of charge carriers from an area of low concentration to an area of high concentration, leading to the formation of a PN junction diode.

• Diffusion is the process of converting light energy into electrical energy in the formation of a PN junction diode.

What is the working principle of a PN junction diode?

• Generation of sound waves at the junction

• Absorption of heat at the junction

• Reflection of light at the junction

• Movement of charge carriers across the junction

How does a PN junction diode allow the flow of current?

• By generating a magnetic field that pushes the charge carriers across the junction

• By increasing the barrier potential and allowing minority charge carriers to move across the junction

• By reducing the barrier potential and allowing majority charge carriers to move across the junction

• By completely blocking the flow of current

What is the role of the depletion region in the working of a PN junction diode?

• Increases the resistance of the diode

• Generates heat in the diode

• Controls the flow of current

• Causes the diode to emit light

What are the applications of PN junction diode?

• Cooking, cleaning, and gardening

• Rectification, signal demodulation, voltage regulation, and LEDs

• Singing, dancing, and painting

• Texting, gaming, and watching TV

Explain how PN junction diodes are used in rectification.

• PN junction diodes allow current to flow in both directions, making them unsuitable for rectification.

• PN junction diodes are used in amplification, not rectification.

• PN junction diodes allow current to flow in only one direction, making them ideal for rectification.

• PN junction diodes are not used in electronic circuits.

How are PN junction diodes used in light-emitting diodes (LEDs)?

• PN junction diodes emit heat instead of light when a forward voltage is applied.

• PN junction diodes emit light when a reverse voltage is applied.

• PN junction diodes are not used in light-emitting diodes (LEDs).

• PN junction diodes emit light when a forward voltage is applied.