The electron concentration in an n-type semiconductor is the same… - Vidyadip

MCQ

The electron concentration in an $n-$type semiconductor is the same as hole concentration in a $p-$type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.

A
current in $\mathrm{n}$-type $=$ current in $\mathrm{p}$-type.
B
current in $p-$type $>$ current in $\mathrm{n}$-type.
✓
current in $\mathrm{n}$-type $>$ current in $\mathrm{p}$-type.
D
No current will flow in $p$-type, current will only flow in $\mathrm{n}$-type.

✓

Answer

Correct option: C.

current in $\mathrm{n}$-type $>$ current in $\mathrm{p}$-type.

c
In $N$ type semiconductor majority charge carriersare $\mathrm{e}^{-}$and $\mathrm{P}$ type semiconductor majority chargecarriers are holes.

$I=\operatorname{neAV}_{d}=\operatorname{neA}(\mu \mathrm{E})$

$\mu_{\mathrm{e}}>\mu_{\mathrm{h}}=\mathrm{I}_{\mathrm{e}}>\mathrm{I}_{\mathrm{h}}$

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