In a P type silicon sample, the hole concentration is 2.25 x 1015 / cm3. If the intrinsic carrier concentration is 1.5 x 1010/ cm3 the electron concentration is

In a P type silicon sample, the hole concentration is 2.25 x 1015 / cm

1.	In a P type silicon sample, the hole concentration is 2.25 x 1015 / cm3. If the intrinsic carrier concentration is 1.5 x 1010/ cm3 the electron concentration is
A.	zero
B.	1010/cm3
C.	105/cm3
D.	1.5 x 1025/cm3
Answer» D. 1.5 x 1025/cm3