MAGNETIC FIELD DUE TO A CURRENT CARRYING STRAIGHT CONDUCTOR:
-A current carrying straight conductor has magnetic field in the form of concentric circles, around it.
-The direction of magnetic field through a current carrying conductor depends upon the direction of flow electric current.
-Let a current carrying conductor be suspended vertically and the electric current is flowing from south to north.
-In this case, the direction of magnetic field will be anticlockwise. If the current is flowing from north to south, the direction of magnetic field will be clockwise.
-The direction of magnetic field, in relation to direction of electric current through a straight conductor can be depicted by using the Right Hand Thumb Rule. It is also known as Maxwell’s Corkscrew Rule.