Question

Calculate the number of coulombs per second if the area is 4cm^2, recombination rate of hole is 1000 cm^-3/s and the differential length is 2mm.

(a) 1.28*10^-23

(b) 1.28*10^-22

(c) 1.28*10^-21

(d) 1.28*10^-20

The question was posed to me in examination.

The above asked question is from The Continuity Equation topic in section Conduction in Semiconductors of Electronic Devices & Circuits

Answer 1

Right choice is (b) 1.28*10^-22

For explanation I would say: number of coulombs per second= eAdxp/τ

=1.6*10^-19*4*10^-4*2*10^-3*1000

=1.28*10^-22.