Question

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

• A. $2k\Omega$
• B. $0.22k\Omega$
• C. $2.3k\Omega$
• D. $\left(\frac{10}{2.3}\right)k\Omega$

Answer 1

Answer: (B)

$0.22k\Omega$

Resistance, $R=\frac{\Delta V}{\Delta I}=\frac{2.3-0.3}{10\times {10}^{-3}}$
$R=\frac{2}{10}\times {10}^3=0.2\times {10}^3\Omega =0.2k\Omega$