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Question

For the forward biased diode characteristics shown in the figure, the dynamic resistance at $I_{D} = 3 m A$ will be ____ $Ω$ .

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Solution

From tha diagram, the dynamic resistance will be,

$R_{d} = \frac{Δ V}{Δ i} = \frac{0.75 - 0.7}{(5 - 3) \times 10^{- 3}}$

$R_{d} = \frac{0.05 \times 1000}{2} = 25 Ω$

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