JEE Mains · Physics · STD 12 - 14. Semicondutor electronics
The \(I-V\) characteristics of a \(p - n\) junction diode in forward bias is shown in the figure. The ratio of dynamic resistance, corresponding to forward bias voltages of \(2 \; V\) and \(4 \; V\) respectively, is
- A \(1: 2\)
- B \(5: 1\)
- C \(1: 40\)
- D \(20: 1\)
Answer & Solution
Correct Answer
(B) \(5: 1\)
Step-by-step Solution
Detailed explanation
\(R =\frac{\Delta V }{\Delta i }\) \(\frac{ R _{1}}{ R _{2}}=\frac{\Delta v _{1}}{\Delta v _{2}} \frac{\Delta i _{2}}{\Delta i _{1}}=\frac{0.1}{0.2} \times \frac{50}{5}=5\)
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