Q. In a junction diode, the direction of diffusion current is
A) From $n$-region to $p$-region
B) From $p$-region to $n$-region
C) From $n$-region to $p$-region if the junction is forward baised and $vice\ versa$ if it is reverse baised
D) From $p$-region to $n$-region if the junction is forward baised and $vice\ versa$ if it is reversed baised
Explanation
(b) In a $p - n$ junction, the direction of diffusion current is from $p$-region to $n$-region only.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.