PHYS1220 Lecture Notes - Lecture 9: Line Integral, Ammeter, Magnetic Monopole
10 Oct 2018
School
Department
Course
Professor
Document Summary
The magnetic field of a long straight wire. B depends on the current in the wire and distance from the wire. Parallel currents in the same direction attract each other. Parallel currents in opposite directions repel each other. Force per unit length due to parallel wires is. Has become the definition of an amp. Used to calculate the magnetic field for wires that are not long and straight. The magnetic field inside the loop is stronger than the outside. Phys1220: due to field lines passing through a smaller area. Field lines travel from north to south magnetic pole and reproduce the magnetic field configuration of a bar magnet and the earth. If the loop has multiple turns, the magnetic field increases by a multiple of the number of loops. If a core is inserted, the field is multiplied by the permeability of the material value.
