Question

In figure, $V_0$ is the potential barrier across a $p-n$ junction, when no battery is connected across the junction

• A. $1$ and $3$ both correspond to forward bias of junction
• B. $3$ corresponds to forward bias of junction and $1$ corresponds to reverse bias of junction
• C. $1$ corresponds to forward bias and $3$ corresponds to reverse bias of junction
• D. $3$ and $1$ both correspond to reverse bias of junction

Answer 1

Answer: (B)

Height of potential barrier decreases when $p-n$ junction is forward biased and it increases when junction is reverse biased.