Question

The resistance of a germanium junction diode whose \( V-I \) is shown in figure is ( \( V_k = 0.3 \, V \))?

• A. 5 kΩ
• B. 0.2 kΩ
• C. 2.3 kΩ
• D. \( \frac{10}{2.3} \) kΩ

Hint:

The resistance of a diode can be found using the slope of the \( V-I \) characteristic curve.

Answer 1

The Correct Option is B

The resistance of the germanium junction diode is calculated from the slope of the \( V-I \) curve. Given the voltage and current values at the knee of the curve, we can compute the resistance using Ohm's law: \[ R = \frac{\Delta V}{\Delta I} \] Where \( \Delta V = 2.3 \, V - 0.3 \, V = 2.0 \, V \) and \( \Delta I = 10 \, mA \).