# Semiconductor n-type silicon

• Engineering
Marcis231
Homework Statement:
Calculate the concentration of holes and electrons in n-type silicon (Si) if the resistivity is 20 Ω.cm and the electron mobility of silicon (µn) is 1300 cm2 / volt. second
Relevant Equations:
I still not understand about this, i found so many formulas but I don't know which one i should use for this question
I still not understand about this, i found so many formulas but I don't know which one i should use for this question

Marcis231