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Question: Answered & Verified by Expert
The resistance of a germanium junction diode whose $V-I$ is shown in figure is $\left(V_{k}=0.3 \mathrm{~V}\right)$
PhysicsSemiconductorsVITEEEVITEEE 2014
Options:
  • A $5 \mathrm{k} \Omega$
  • B $0.2 \mathrm{k} \Omega$
  • C $2.3 \mathrm{k} \Omega$
  • D $\left(\frac{10}{2.3}\right) \mathrm{k} \Omega$
Solution:
1459 Upvotes Verified Answer
The correct answer is: $0.2 \mathrm{k} \Omega$
Resistance, $\mathrm{R}=\frac{\Delta \mathrm{V}}{\Delta \mathrm{I}}=\frac{2.3-0.3}{10 \times 10^{-3}}$
$\mathrm{R}=\frac{2}{10} \times 10^{3}=0.2 \times 10^{3} \Omega=0.2 \mathrm{k} \Omega$

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