How is the direction of a magnetic field at a location indicated? *A magnetic field is always directed directly opposite to the direction that the north pole of a small compass needle points at the location. A magnetic field is always directed in the direction that the north pole of a small compass needle points at the location. A magnetic field is always directed perpendicular and vertically upward from the direction that the north pole of a small compass needle points at the location. A magnetic field is always directed toward due north