Question

From the given circuit diagram, considering the diode to be a silicon semiconductor diode, what is the magnitude of diode current? (Use an appropriate model of the diode)

(a) 43 mA

(b) 0 mA

(c) 4.3 mA

(d) 5 mA

I have been asked this question at a job interview.

The origin of the question is Diode Approximations and Series Connection topic in chapter Diode Circuit of Analog Circuits

Answer 1

The correct choice is (c) 4.3 mA

Easy explanation: ID = (V-VD)/R = 4.3 mA.