The electron concentration in an n-type semic | vedclass

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(C) The current $I$ in a semiconductor is given by the formula $I = n e A v_d$,where $v_d = \mu E$.Thus,$I = n e A \mu E$.In an $n$-type semiconductor

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Current in $n$-type $ > $ Current in $p$-type.

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(C) The current $I$ in a semiconductor is given by the formula $I = n e A v_d$,where $v_d = \mu E$.Thus,$I = n e A \mu E$.In an $n$-type semiconductor,the majority charge carriers are electrons,and in a $p$-type semiconductor,the majority charge carriers are holes.Given that the carrier concentrations are the same $(n_e = n_h)$,the current depends on the mobility $(\mu)$ of the charge carriers.Since the mobility of electrons $(\mu_e)$ is greater than the mobility of holes $(\mu_h)$ in a semiconductor,it follows that $I_n > I_p$.Therefore,the current in the $n$-type semiconductor is greater than the current in the $p$-type semiconductor.

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

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