1.

Define the term 'mobility' of charge carriers. Write its S.I. unit.

Answer»

Solution :Mobility is defined as the magnitude of the DRIFT velocity per UNIT electric field.
`mu=(|V_d|)/E=(alphatau)/E=(eE)/m TAU/E=e/m tau`
where`tau` is the average collision time for electrons.
The SI unit of mobility is `m^2//Vs` or `m^2V^(-1)S^(-1)`


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