Question

Which of the following statements is incorrect about a junction in forward biased condition?

• A. The external applied voltage opposes the junction potential
• B. The width of the depletion region reduces
• C. A p-n junction diode when forward biased offers negligible resistance
• D. The width of the depletion region increases

Answer 1

The correct option is D The width of the depletion region increases

When a p-n junction is forward biased, this potential difference reduces the barrier potential $V_o$, effective barrier potential reduces to $(V_o-V)$. The thickness of depletion layer decreases. Current flows maximum when a p-n junction is forward biased and resistance offered is minimum.

So the only incorrect statement is option D.