Due to the deflection of moving charges, the Lorentz force underlies it.
This effect manifests in a difference in angle between the current density and electric field in short samples, such as the Corbino disc geometry. Using a square of semiconductor, with contacts at the corners where measurements are taken of resistivity and this phenomenon, the mobility and sheet density of a majority carrier can be determined by the van der Pauw (POW) method. Its conductivity, for certain conditions, is quantized at integer or rational fraction multiples of fundamental charge squared over Planck's constant, so it is used to define the Ohm. Due to the deflection of moving charges, the Lorentz force underlies it. For 10 points, name this effect that is the production of a potential difference due to the influence of a magnetic field transverse to current.
This effect manifests in a difference in angle between the current density and electric field in short samples, such as the Corbino disc geometry.
fractional quantum Hall effect