Drift velocity in Hall Effect refers to the average speed at which free electrons move in a conductor under the influence of an electric field and a magnetic field perpendicular to each other.
Drift velocity can be calculated by dividing the current density by the product of the charge of an electron, the number of charge carriers per unit volume, and the cross-sectional area of the conductor.
The drift velocity is directly proportional to the electric field strength. This means that as the electric field increases, the drift velocity also increases, and vice versa.
As temperature increases, the atoms in a conductor vibrate more, making it more difficult for electrons to move freely. This results in a decrease in drift velocity.
Drift velocity is a crucial factor in Hall Effect measurements as it allows for the determination of the magnitude and direction of a magnetic field. It also helps in understanding the behavior of electrons in a conductor under the influence of both electric and magnetic fields.