Download Aptitude Crack
img not found img not found

Exam Questions Papers - Engineering

Q1:

A silicon PN junction with no bias have a doping concentration of
Nd = 2 x 1016 cm-3 and Na = 1016 cm-3. The space charge width is:

A 3.345 x 10-3 cm

B 3.345 x 10-4 cm

C 3.345 x 10-5 cm

D 3.345 x 10-6 cm

ANS:C - 3.345 x 10-5 cm

w = 3.345 x 10-5 cm.