PPE28_MagneticField - Magnetism Magnetic Fields RHJansen...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
© RHJansen Magnetism Magnetism Magnetic Fields Magnetic Fields
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
© RHJansen Magnetic Fields Moving charges cause magnetic fields . Magnets have two poles (ends) North is analogous to positive charge in electricity South is analogous to negative charge in electricity The magnetic field of one magnet applies a force on another magnet. The rules of attraction are similar to electricity Opposites ( N and S ) attract Like poles ( N and N ) ( S and S ) repel We will look at three types of magnets Fixed Magnets : Typical magnets you are familiar with (bar and horseshoe magnets, etc.) Moving charges : Protons, electrons, and ions. Current carrying wires : A current consists of many moving charges. © RHJansen
Image of page 2
© RHJansen Fixed Magnets (such as bar magnets) All substances contain moving electrons in their orbits around the nucleus of the atoms in the substance. However, the way the electrons load the energy levels influences if an atom acts as a magnet or not. Paper is not magnetic. The net magnetism is canceling out. Iron is a well known magnetic substance . The net magnetism of all the moving electrons does not cancel, and each atom of iron is a tiny magnet. Why then does not everything made of iron act magnetic? A piece of iron can be divided into sections called domains. If the atoms (magnets) point one way
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern