PN Junction — Practice Quiz

Question 1

In a p-n junction at zero bias:

Accepted Answer

Depletion region with built-in E-field exists; net current is zero

Answer

No depletion region forms

Answer

Built-in potential is zero

Answer

Current flows continuously

Question 2

Typical built-in potential of a Si p-n junction:

Accepted Answer

0.7 V

Answer

0.1 V

Answer

0.3 V

Answer

1.1 V

Question 3

Forward biasing a p-n junction means:

Accepted Answer

p connected to +, n to −

Answer

p connected to −, n to +

Answer

Both to ground

Answer

Reverse the diode

Question 4

Under reverse bias, the depletion region:

Accepted Answer

Widens

Answer

Shrinks

Answer

Stays the same

Answer

Disappears

Question 5

Shockley diode equation predicts current is:

Accepted Answer

Exponential in V (forward)

Answer

Linear in V

Answer

Independent of V

Answer

Inversely proportional to V