Another version of this phenomenon can be used to measure the charge carrier density, since it arises as a consequence of the Lorentz force law applied to those particles.
In one version of this phenomenon, its namesake conductivity takes on values equal to the elementary charge squared over Planck's constant, a quantity which is multiplied by either a fractional or integral value. Another version of this phenomenon can be used to measure the charge carrier density, since it arises as a consequence of the Lorentz force law applied to those particles. Its namesake quantity is proportional to the product of current and (*) magnetic field, divided by the thickness of the plate and charge carrier density. For 10 points, name this effect in which a magnetic field perpendicular to a current induces a voltage difference perpendicular to both.
In one version of this phenomenon, its namesake conductivity takes on values equal to the elementary charge squared over Planck's constant, a quantity which is multiplied by either a fractional or integral value.
Hall effect