Magnets & Current Connection

1. Chapter 9
MAGNETS
AND
CURRENT
CONNECTION

2. Magnets and Current Connection
The next steps in understanding electricity
unfolded in Copenhagen, Denmark. In 1820
Hans Christian Oersted made a key
discovery.
Oersted created an electric current in the
usual manner, with wires connecting one
terminal of a battery to the other. He placed
a compass needle, a magnet, near the
circuit. When the current flowed, the
compass needle veered from pointing to
Earth’s magnetic North Pole - its normal
position - to taking an odd position at right
angles to the wire.

3. Magnets and Current Connection
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4. The magnetosphere is the region
surrounding Earth in which the planet's
magnetic field deflects the solar wind. The
magnetosphere is compressed by the solar
wind on the side of the planet facing the
Sun, and trails far off into space on side
away from the Sun.
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5. The outermost layer of the Sun's
atmosphere, the corona, is so hot that it
continually escapes into space. The
resulting stream of charged particles that
blows across the entire solar system is
called the solar wind.
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6. Earth has two magnetic poles that lie at the
northern and southern ends of the magnetic
field (at the polar areas of the Northern
Hemisphere and Southern Hemisphere).
These poles vary slightly in strength and
position from year to year. Compass needles
point toward magnetic north, which is
separated from the geographic North Pole by
an angle of approximately 11½°.
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7. Earth has two magnetic poles that lie at the
northern and southern ends of the magnetic field (at
the polar areas of the Northern Hemisphere and
Southern Hemisphere). These poles vary slightly in
strength and position from year to year. The south
magnetic pole is located just off the coast of
Wilkes Land, Antarctica, about 2550 km (1600 mi)
from the geographic South Pole.
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8. Magnets and Current Connection

9. Oersted worried about this effect until
it dawned on him that, after all, a
compass is designed to detect
magnetic fields. He realized that the
current in the wire must be producing
a magnetic field.
Oersted had discovered a connection
between electricity and magnetism:
Currents produce magnetic fields.
Magnets, of course, also produce
magnetic fields, and their ability to
attract pieces of iron had been well
studied. The news traveled across
Magnets and Current Connection

10. Hans Christian Oersted predicted in 1813 that
a connection would be found between
electricity and magnetism. In 1819, this
discovery demonstrated that electric currents
produce magnetic fields.
Magnets and Current Connection

11. Magnets and Current Connection
Sample

12. Magnets and Current Connection
Sample
Video 1…Sample

13. Magnets and Current Connection
Sample

14. Magnets and Current Connection

15. Magnets and Current Connection
Sample
Video…

16. Magnets and Current Connection

17. Magnets and Current Connection
Reaction of Materials
to Magnets.
1. Retentive 2.
Permeable

18. Magnets and Current Connection

19. Magnets and Current Connection

20. Magnets and Current Connection

21. Magnets and Current Connection

22. Magnets and Current Connection

23. Magnets and Current Connection

24. An AC Electric Motor when examined
into its interior parts…
Magnets and Current Connection

25. A Direct Current Motor…
Magnets and Current Connection

26. A Direct Current Motor when examined
in its interior structures…
Magnets and Current Connection

27. A Direct Current Motor when examined
in its interior structures…
Magnets and Current Connection

28. The following is a comic strip that will
elaborate and explain how Hans
Christian Oersted was able to
discover the connection between
magnets and current.
The discovery ushered and started
many breakthroughs on
electromagnetism.
Magnets and Current Connection

29. BACK TO OERSTEDLAND. Electromagnetic Induction
Magnets and Current Connection

30. BACK TO OERSTED LAND…
Magnets and Current Connection

31. BACK TO OERSTED LAND…
Magnets and Current Connection

32. BACK TO OERSTED LAND…
Magnets and Current Connection

33. BACK TO OERSTED LAND…
Magnets and Current Connection

34. BACK TO OERSTED LAND…
Magnets and Current Connection

35. Magnets and Current Connection
BACK TO OERSTED LAND…

36. Magnets and Current Connection
BACK TO OERSTED LAND…