Electromagnetic induction.ppt
- 2. 3/26/2023 2 Electromagnetism ? Electricity and magnetism two faces of electromagnetism ¨C a moving electric charge produces magnetic fields ¨C changing magnetic fields move electric charges
- 3. 3/26/2023 3 Magnetic fields from electricity ? A static distribution of charges produces an electric field ? Charges in motion (an electrical current) produce a magnetic field ¨C electric current is an example of charges (electrons) in motion
- 4. 3/26/2023 4 Electromagnets ? Arranging wire in a coil and running a current through produces a magnetic field that looks a lot like a bar magnet ¨C called an electromagnet ¨C putting a real magnet inside, can shove the magnet back and forth depending on current direction: called a solenoid
- 5. 3/26/2023 5 Induced Current ? changing magnetic field produces an electric current in a loop surrounding the field called Faraday¡¯s Law electromagnetic induction.
Editor's Notes
- 05/19/08
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