State Law Which Determines Direction Of Magnetic Field Round Current Carrying Conductor

State the law which determines the direction of magnetic field round a current carrying conductor.


The direction of magnetic field produced due to flow of current in a conductor can be determined by the right hand thumb rule. It states that if we hold the current carrying conductor in our right hand such that the thumb points in fire direction of current then the fingers encircling the wire indicate the direction of the magnetic lines of force.

Right hand rule