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  4. A silicon diode requires minimum current of 2mA to be above its knee point of its (V - I) characteristics. Assuming voltage across diode is constant above its knee point. The value of maximum resistance that should be connected in series with diode and battery of 10V such that diode operates above its knee point. (Assume resistance of diode to be zero)

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Q. A silicon diode requires minimum current of $2mA$ to be above its knee point of its $\left(V - I\right)$ characteristics. Assuming voltage across diode is constant above its knee point. The value of maximum resistance that should be connected in series with diode and battery of $10V$ such that diode operates above its knee point. (Assume resistance of diode to be zero)

NTA AbhyasNTA Abhyas 2022

Solution:

$\frac{10 - 0 . 7}{2 \times 10^{- 3}}=4.65k\Omega $