Question

In the diode volt ampere characteristics what will be the resistance if a slope is drawn between the voltages 50 to 100 and corresponding current 5 to 10?

(a) 5 ohms

(b) 10 ohms

(c) 50 ohms

(d) 100 ohms

The question was posed to me by my school teacher while I was bunking the class.

My question is taken from Diode Resistance topic in section Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer 1

Correct choice is (b) 10 ohms

The explanation is: We know that, in volt ampere characteristics the resistance is equal to the reciprocal of the line joining the origin and operating point, R = dV/dI, by substituting the value of dV and dI we get R= 10ohms.