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The number density of electrons and hold...

The number density of electrons and holds in pure silicon at `27 ^(@)C` are equal and its value is `2.0xx10^(16)m^(-3)`. On doping with indium, the hole density increases to `4.5xx10^(22)m^(-3)`, find the electron density in doped silicon.

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here, `n_(i)=2.0xx10^(16)m^(-3) ,n_(h)=4.5xx10^(22)m^(-3),`
`n^(e)=n_(i)^(2)/n^(h)=(2.0xx10^(16))^(2)/(4.5xx10^(22))=8.89xx10^(9)m^(-3)`
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