Question

In a p-n junction diode, the increase in forward voltage of 0.19 V increases the forward current by 37.6 mA. The dynamic resistance of the junction is

• A. 2 ohm
• B. 3 ohm
• C. 4 ohm
• D. 5 ohm.

Answer 1

Answer: (D)

5 ohm.

Answer 2

$r_{a . c}=\frac{\Delta V}{\Delta I}=\frac{0.19 V}{37.6 m A}$ $=5 \,ohm$