Semiconductor Diode Quiz

What is the process that leads to the formation of the depletion region in a semiconductor diode?

• Diffusion of holes from the n-region into the p-region

• Diffusion of electrons from the p-region into the n-region

• Flow of majority carriers across the junction

• Application of reverse bias

What happens to the current flow when a potential barrier is present within the depletion region of a semiconductor diode?

• No current flows

• Current flows only in the reverse direction

• Current flows in both directions

• Current flows only in the forward direction

What type of biasing is required to induce forward current in a semiconductor diode?

• Zero bias

• Reverse bias

• Forward bias

• No bias

What happens to the depletion region when a reverse bias is applied to a semiconductor diode?

• It remains the same

• It widens

• It narrows

• It disappears

What is the effect of applying forward bias to a semiconductor diode?

• Reverses the depletion region

• Reduces the depletion region

• Increases the depletion region

• No effect on the depletion region

What is the primary function of a semiconductor diode under zero bias conditions?

• Allow current flow only in the reverse direction

• Block current flow in both directions

• Allow current flow in both directions

• Allow current flow only in the forward direction

What happens to the space charge width when reverse bias is applied to a semiconductor diode?

• It becomes zero

• It decreases

• It increases

• It remains the same

What is the result of applying reverse bias to a semiconductor diode?

• Increases the electric field

• Reduces the built-in potential

• Induces reverse leakage current

• Induces forward current

What is the effect of forward bias on the potential barrier of a semiconductor diode?

• Subtracts from the built-in barrier

• Reverses the built-in barrier

• Adds to the built-in barrier

• Has no effect on the built-in barrier

What happens to the Fermi levels in the p and n regions when reverse bias is applied to a semiconductor diode?

• Fermi level in p region is higher

• Fermi levels are not affected

• Fermi levels match

• Fermi level in n region is higher