Semiconducting Devices Question 208
Question: In a PN-junction diode not connected to any circuit
[IIT-JEE 1998]
Options:
A) The potential is the same everywhere
B) The P-type is a higher potential than the N-type side
C) There is an electric field at the junction directed from the N- type side to the P- type side
D) There is an electric field at the junction directed from the P-type side to the N-type side
Show Answer
Answer:
Correct Answer: C
Solution:
At junction a potential barrier/depletion layer is formed, with N-side at higher potential and P-side at lower potential.
Therefore there is an electric field at the junction directed from the N-side to P-side
