PHYS 102 Lecture Notes - Lecture 13: South Pole, Faraday'S Law Of Induction, Magnetic Declination

• School: McGill University
• Department: Physics
• Course: PHYS 102
• Professor: Nick Provatas

Document Summary

Chapter 20: magnetism: any magnet, whether it is in the shape of a bar or a horseshoe, has two ends or faces, called poles, which is where the magnetic effect is strongest. If a bar magnet is suspended from a fine thread, it is found that one pole will always point toward the north. If a bar magnet is cut in half, you do not obtain isolated north and south poles. Uniform magnetic field: the field between two flat parallel pole pieces of a magnet is nearly uniform if the rea of the pole faces is large compared to their separation. Instead, the force is directed at right angles to the magnetic field direction. If the magnetic field b is made stronger, the force is found to be proportionally greater: the force also depends on the angle between the current direction and the magnetic field, being proportional to sin .