Question

Which of the following is true in case of the unbiased p-n junction?

(a) The high potential at n-side and low potential at p-side

(b) The high potential at p-side and low potential at n-side

(c) p and n both are at the same potential

(d) Undetermined

I got this question during an online exam.

My enquiry is from Semiconductor Electronics topic in chapter Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

Answer 1

Correct option is (a) The high potential at n-side and low potential at p-side

The explanation: In an unbiased p-n junction, the high potential is at the n-side and the low potential at the p-side. When the polarity of the battery is reversed, the p-n junction gets reverse biased and does not conduct electric current.