•What is hall effect•Formulas and description•How to measure hall coefficient•Measurement of magnetic field using hall effect

By : Nitesh gupta 2nd sem,Mae

The hall effect is the production of a potential difference across an electrical conductor in which an electric current flows in the presence of a magnetic field

If a piece of conductor carrying current is placed in a transverse magnetic field ,then an electric field is produced inside the conductor in a direction normal to both current and magnetic field

At equilibrium

For n type

For p type

For n typeFor p type

Bz actual magnetic field =permeability*observed magnetic field

a very small conductor or semiconductor element is used at the tip of the probe.

Electric current is passed through the conductor. In a magnetic field, a force is exerted on the moving electrons which tends to push them to one side of the conductor.

A build up of charge at the sides of the conductors will balance this magnetic influence, producing a measurable voltage between the two sides of the conductor

The probe is placed in the magnetic field such that the magnetic lines of force intersect the majordimensions of the sensing element at a right angle.Placement and orientation of the probe is very important