Calculating Resistivity of Doped Silicon Sample

[asd1249jf]

Homework Statement

A silicon sample is doped with 5.0 X 10^19 donor atoms/cm^3 and 5.0 X 10^19 acceptor atmos/cm^3

a)What is its resistivity?
b)Is this an insulator, conductor or semiconductor?
c)Is this intrinsic material?

Homework Equations

No clue.. this is where I need help

The Attempt at a Solution

The question completely threw me off.

I am assuming I can answer b and c once I calculate part a, but I have no clue which equation to use. Can anybody start me off?

 

[Astronuc]

Please read one's textbook.

Intrinsic semiconductor is undoped.

The electrical conductivity is the inverse of the resistivity: $\sigma$ = 1/$\rho$.

Read this page - http://www.virginia.edu/bohr/mse209/chapter19.htm

 

[asd1249jf]

Please read one's textbook.

Intrinsic semiconductor is undoped.

The electrical conductivity is the inverse of the resistivity: $\sigma$ = 1/$\rho$.

Read this page - http://www.virginia.edu/bohr/mse209/chapter19.htm

Sorry, Amazon still hasn't sent me the textbook yet, so I had a hard time doing the homework, searching through internet, which led me to this website at end :(

Thanks for your help