Magnetic fux densityMagnetic fux densityis defned as the magnetic passing per unit surface areaIts unit is or Tesla.Amperescircuit law Itstates that the line integral of magnetic feld intensity around any closed path is equal to the current enclosed by that path- Permeabilityorent! force equation for mo"ing charge The#lectric force on a mo"ing or stationary charge$%hen it present in an electric fledis TheMagnetic force on a mo"ing or stationary charge$%hen it present in an magnetic fled%ith fux density is &orce on a %ire$ carrying current'I %hich is placed in a magnetic feld(The force on a mo"ing charge %hen it present in a magnetic feld is