Question

When a p-n junction diode is forward biased, the:

• A. The barrier height and the depletion layer width both increase.
• B. The barrier height increases and the depletion layer width decreases.
• C. The barrier height and the depletion layer width both decrease.
• D. The barrier height decreases and the depletion layer width increases.

Hint:

In a forward biased diode, the barrier height decreases and the depletion region narrows, allowing current to flow more easily.

Answer 1

The Correct Option is C

When a p-n junction diode is forward biased, the applied voltage reduces the barrier potential, allowing current to flow through the junction. This reduces both the barrier height and the width of the depletion layer. Thus, the correct answer is option (C).