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From the given I-V characteristics of a silicon diode, what is the approximate value of rav between marked points?

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From the given I-V characteristics of a silicon diode, what is the approximate value of rav between marked points?

(a) 7 ohms

(b) 11.2 ohms

(c) 8 ohms

(d) 6 ohms

I have been asked this question in an interview for internship.

The doubt is from Diode Basics and Equivalent Circuits topic in division Diode Circuit of Analog Circuits

1 Answer

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Best answer
The correct option is (a) 7 ohms

Best explanation: rav is the average AC resistance, found  between two marked points in the I-V graph. Here rav=0.1/14mA=7Ω.

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