Question

If the drift current is 100mA and diffusion current is 1A what is the total current in the semiconductor diode.

(a) 1.01 A

(b) 1.1 A

(c) 900m A

(d) 10 A

This question was addressed to me in a national level competition.

My query is from Quantitative Theory of the P-N Diode Currents in portion Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer 1

The correct option is (b) 1.1 A

To explain I would say: We know that the total current in a semiconductor is equal to sum of both drift current and diffusion current. Total current = 1A + 100mA =1.1A.