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In sample of pure silicon 10^(13) "atom"...

In sample of pure silicon `10^(13) "atom"//cm^(3)` is mixed of phosphorus. If all doner atoms are active then what will be resistivity at `20^(@)C` if mobility of electron is `1200 cm^(2)//"Volt"` sec :-

A

`0.5209` ohm cm

B

`5.209` ohm cm

C

`52.09` ohm cm

D

`520.9` ohm cm

Text Solution

Verified by Experts

The correct Answer is:
D
`rho=(1)/(en_(e)mu_(e))=(1)/(1.6xx10^(-19)xx10^(13)xx1200)=520.9 Omega//cm`.
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