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# Physics 2: Magnetism PHYS 2020

TSU
GPA 3.8

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This covers all you ever wanted or needed to know about magnetism that is taught in a typical Physics 2 course. The material may be hard to understand but not with these notes! I've compiled my lec...
COURSE
Physics 2
PROF.
Dr. Geoffrey Burks
TYPE
Study Guide
PAGES
5
WORDS
KARMA
50 ?

## Popular in Physics 2

This 5 page Study Guide was uploaded by Lauren Adams on Sunday January 31, 2016. The Study Guide belongs to PHYS 2020 at Tennessee State University taught by Dr. Geoffrey Burks in Fall 2014. Since its upload, it has received 59 views. For similar materials see Physics 2 in Physics 2 at Tennessee State University.

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Date Created: 01/31/16
MAGNETISM Monday, November 17, 2014 7:13 PM What are Magnets? What do they do? Why? Permanent magnets are only made of iron, nickel and cobalt. Magnetism is very closely related to electricity and some say it is  just a restatement of electricity from another viewpoint. Whereas an electric field can be caused by any charge; Magnetic fields  are only created by MOVING CHARGES. Ferromagnetic materials have a north and south pole. There is no such thing as a magnetic monopole as of yet. The earth itself  is a magnet.    Magnetic interactions are created by moving charges or Current creates magnetic field. Changing magnetic flux creates and  Electric field. Changing magnetic flux = changing magnetic field.    In magnetism, four different types of right hand rules are used. Only two are important though, the rest can be mathematically  found. It is very important to remember the right hand rules for magnetism. One involves your thumb and curling fingers for  current. The other involves thumb, index and middle fingers pointing in velocity of particle, magnetic field direction in order to  find the direction of the magnetic force. Whereas Electric field and force were sort of interchangeable, Magnetic field and  Magnetic Force are two completely different things.    Magnetic Field o Magnetic field points away from the north pole o Magnetic field points toward the south pole.   There are no such things as magnetic monopoles. Magnets are always dipoles even if you continuously cut them up into  smaller and smaller pieces.   When a charged particle moves through a magnetic field, it feels a magnetic force  . This force becomes zero when the  charge moves parallel to the field, and the force is at a maximum value when the charge moves perpendicular to the  magnetic field  .  Magnetic Force is given by the equation                   Two positive point charges moving side by side in the same direction with the same velocity, create forces on each other. The direction of the magnetic force that the upper point charge exerts on the lower one is towards the upper point charge, meaning that the magnetic force is attractive. The field is out of the page on an upper charge and since it goes in a circle, the lower charge field is into the board, making the Force go up. The magnetic field caused by several moving charges is the vector sum of the fields produced by the individual charges.   Conductors If a wire/conductor carries current, then it also will experience a force when it passes through a magnetic field Is the equation for magnetic flux. Instead of Gauss's law, we use Ampere's law for  magnetic flux. Ampere's Law is as follows:    A solenoid is a device that produces a dipole magnetic field from electricity flowing through a coil of a wire. These are  electromagnets.   FB

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