define the term mobility?
Answers
Answer:
The mobility of a charge carrier is defined as the drift velocity of the charge carrier per unit electric field. Thus, mobility , μ=Evd. If q be the charge of carrier and τ be the relaxation time, then mobility μ=mqτ where m be the mass of the charge carrier.
Answer:
Mobility, in solid-state physics, measurement of the ease with which a particular type of charged particle moves through a solid material under the influence of an electric field. Such particles are both pulled along by the electric field and periodically collide with atoms of the solid. This combination of electric field and collisions causes the particles to move with an average velocity, called the drift velocity. The charge carrier in most metals is the negatively charged electron (see electron scattering).