A silicon sample A is doped with 10¹⁸ Atoms/cm³ of Boron. Another sample B of identical dimensions is doped with 10¹⁸ atoms/cm³ of phosphorus. The ratio of electron to hole mobility is 3. The ratio of conductivity of the sample A to B is

A silicon sample A is doped with 10¹⁸ Atoms/cm³ of Boron. Another

1.	A silicon sample A is doped with 10¹⁸ Atoms/cm³ of Boron. Another sample B of identical dimensions is doped with 10¹⁸ atoms/cm³ of phosphorus. The ratio of electron to hole mobility is 3. The ratio of conductivity of the sample A to B is
A.	3
B.	1/3
C.	2/3
D.	3/2
Answer» C. 2/3