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

Define mobility of a charge carrier.

Define the term mobility of charge carriers in a conductor. Write its SI unit.

Define the term mobility of charge carriers in a current carrying conductor. Obtain the relation for mobility in terms of relaxation time.

Define the term mobility of charge carriers in a current carrying conductor. Obtain the relation for mobility in terms of relaxation time.

Define the term 'conductivity' of a metallic wire. Write its SI unit.