Ferromagnetic Materials Iron, Nickel, and Cobalt Revision02
Magnets <ul><ul><li>Magnets have Magnetic Fields. </li></ul></ul><ul><ul><li>Moving electrons produce magnetic fields. </l...
Magnets  cont. <ul><li>There is more to it than like poles repel and opposite poles attract.  It has to do with electrical...
Magnetic Domains Revision02
Magnetic Tape Revision02
Oersted’s discovery Revision02
Moving electrons create a magnetic field! Revision02
Revision02 X
Revision02 solenoid (or inductor)
An electromagnet Revision02
Magnetic fields that move across a wire create electricity! Revision02
An electric motor converts electricity to motion. Revision02
An electric generator converts motion to electricity. Revision02
Power plants create electrical power using generators called turbines. Revision02
Your Home Revision02
Electricity is not entirely efficient. Revision02
Sources <ul><li>Bloomfield,  How Things Work. </li></ul><ul><li>Krauskopf & Beiser,  The Physical Universe . 10th ed. </li...
Upcoming SlideShare
Loading in …5
×

Solve problems in electromagnet circuits 2

933 views

Published on

Published in: Business, Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
933
On SlideShare
0
From Embeds
0
Number of Embeds
28
Actions
Shares
0
Downloads
38
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide
  • The Earth’s magnetic field is thought to originate with moving charges. The core is probably composed of iron and nickel, which flows as the Earth rotates, creating electrical currents that result in the Earth’s magnetic field.
  • A very highly simplified model of an atom has most of the mass in a small, dense center called the nucleus. The nucleus has positively charged protons and neutral neutrons. Negatively charged electrons move around the nucleus at a much greater distance than is suggested by this simplified model. Ordinary atoms are neutral because there is a balance between the number of positively charged protons and negatively charged electrons.
  • Fe, Ni, and Co are called ferromagnetic materials. The domains in Ferromagnetic Materials are usually in a random orientation and free to move . The diagram above illustrates how the magnetic domains rearrange when in the proximity of a magnetic field.
  • An electrical motor is an electromagnetic device that converts electrical energy into mechanical energy. A motor has two working parts, a stationary magnet called a field magnet and a cylindrical, movable electromagnet called an armature. The armature is on an axle and rotates in the magnetic field of the field magnet. The axle is used to do work.
  • Solve problems in electromagnet circuits 2

    1. 1. Ferromagnetic Materials Iron, Nickel, and Cobalt Revision02
    2. 2. Magnets <ul><ul><li>Magnets have Magnetic Fields. </li></ul></ul><ul><ul><li>Moving electrons produce magnetic fields. </li></ul></ul><ul><ul><li>Earth's Magnetic Field </li></ul></ul>Revision02
    3. 3. Magnets cont. <ul><li>There is more to it than like poles repel and opposite poles attract. It has to do with electrical charge. </li></ul>Revision02
    4. 4. Magnetic Domains Revision02
    5. 5. Magnetic Tape Revision02
    6. 6. Oersted’s discovery Revision02
    7. 7. Moving electrons create a magnetic field! Revision02
    8. 8. Revision02 X
    9. 9. Revision02 solenoid (or inductor)
    10. 10. An electromagnet Revision02
    11. 11. Magnetic fields that move across a wire create electricity! Revision02
    12. 12. An electric motor converts electricity to motion. Revision02
    13. 13. An electric generator converts motion to electricity. Revision02
    14. 14. Power plants create electrical power using generators called turbines. Revision02
    15. 15. Your Home Revision02
    16. 16. Electricity is not entirely efficient. Revision02
    17. 17. Sources <ul><li>Bloomfield, How Things Work. </li></ul><ul><li>Krauskopf & Beiser, The Physical Universe . 10th ed. </li></ul><ul><li>Tillery, Physical Science . </li></ul>Revision02

    ×