Question

What is the approximate value of voltage across the silicon diode for the diagram given?

(a) +0.7 V

(b) 0 V

(c) +10 V

(d) -10 V

I had been asked this question in an online interview.

My question is from Diode Basics and Equivalent Circuits topic in portion Diode Circuit of Analog Circuits

Answer 1

Right answer is (d) -10 V

Explanation: -10 V. The operating characteristic of a diode operating in the reverse bias region suggests that beyond a certain threshold current, the voltage across the diode is nearly constant = reverse breakdown voltage.