Question

in the practical diode model,
select one:
o a. the barrier potential is taken into account
o b. the forward dynamic resistance is taken into account and the barrier potential is taken into account
o c. the forward dynamic resistance is taken into account
o d. the barrier potential is ignored

Explanation:

In the practical diode model, the barrier potential (also known as the cut - in voltage, e.g., approximately \(0.7\space V\) for silicon diodes) is considered. The ideal diode model ignores the barrier potential, while the practical model accounts for it. The forward dynamic resistance (\(r_d=\frac{\Delta V}{\Delta I}\)) is considered in the small - signal model of the diode, not in the practical (large - signal) diode model.

Answer:

A. the barrier potential is taken into account