Understanding PN Junctions and Depletion Layers

What is the majority charge carrier in a p-type semiconductor?

• Electrons

• Holes

• Neutrons

• Protons

What is formed when a p-type semiconductor is joined with an n-type semiconductor?

• Depletion Layer

• Electric Field

• PN Junction

• Barrier Voltage

What happens to electrons from the n-type semiconductor at the PN junction?

• They create a magnetic field

• They move to the p-type side

• They recombine with holes

• They remain stationary

What is the result of electron-hole recombination at the PN junction?

• Formation of a magnetic field

• Creation of a depletion layer

• Generation of light

• Increase in temperature

What is the depletion layer in a PN junction?

• A region with no free charge carriers

• A region with excess holes

• A region with excess electrons

• A region with high conductivity

What is the potential difference across a PN junction called?

• Magnetic Field

• Junction Voltage

• Current Flow

• Electric Field

What prevents further recombination of charge carriers in a PN junction?

• Magnetic Field

• Barrier Voltage

• Thermal Energy

• Electric Field

What is the effect of the junction voltage on electron movement?

• It accelerates electrons

• It increases temperature

• It prevents electrons from moving

• It creates more holes

What happens to the charge distribution when a depletion layer forms?

• It becomes unstable

• It neutralizes

• It creates a potential difference

• It becomes uniform

What is the role of the barrier voltage in a PN junction?

• To allow electron flow

• To prevent electron flow

• To increase temperature

• To create light