What is a Magnetic Field?
What creates a Magnetic Field?
What is the relationship between the Right Hand Rule and the Magnetic Field?
When current flows in a wire, a magnetic field is created around the wire. To actually see this, take your right hand, curl the fingers, and stick the thumb straight out. Now, point your thumb in the direction of the current flowing in the wire (using conventional current where current flows from the + end of a battery to the - end of the battery. NOTE: electrons flow from the - end of a battery to the + end, and is called electron current instead of conventional current). The direction your fingers are curved around the wire is the direction of the magnetic field around the wire.