Semiconductors Quiz

What is an intrinsic semiconductor primarily characterized by?

• High impurity levels

• Equal numbers of electrons and holes

• Majority of holes

• Majority of electrons

What is the process of adding impurities to a semiconductor to increase its conductivity called?

• Diffusion

• Doping

• Oxidation

• Reduction

Which type of impurity donates extra electrons for conduction?

• Negative impurity

• Neutral impurity

• Donor impurity

• Acceptor impurity

In an n-type semiconductor, what are the majority carriers?

• Holes

• Electrons

• Protons

• Neutrons

What element is typically used as a donor impurity in n-type semiconductors?

• Boron

• Phosphorus

• Gallium

• Indium

In n-type semiconductors, where does the Fermi energy level lie?

• Closer to the conduction band

• Closer to the valence band

• Below the valence band

• In the middle of the band gap

What happens when a trivalent impurity is added to an intrinsic semiconductor?

• It creates extra electrons

• It forms a complete valence bond

• It creates a hole

• It reduces conductivity

In a p-type semiconductor, what are the majority carriers?

• Protons

• Neutrons

• Holes

• Electrons

Which element is commonly used as an acceptor impurity in p-type semiconductors?

• Phosphorus

• Boron

• Arsenic

• Antimony

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

• Electron

• Hole

• Neutron

• Proton