1 / 12

Electromagnetic Force

Electromagnetic Force. Force on a Charged Particle. F= Bqv F=force (N) B= Magnetic field q= charge (C) N/Amp∙m or velocity (m/s) Tesla. EXAMPLE.

kaida
Télécharger la présentation

Electromagnetic Force

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electromagnetic Force

  2. Force on a Charged Particle F= Bqv F=force (N) B= Magnetic field q= charge (C) N/Amp∙m or velocity (m/s) Tesla

  3. EXAMPLE An electron travels at a speed of 3x106m/s through a magnetic field of 4x10-2 Tesla. How much force is acting on the electron? F=Bqv F= (4x10-2T)(1.6x10-19C)(3x106m/s) F= 1.9x10-14N

  4. Force on a Wire With Current F=BIL F- force(N) B- Magnetic Field I-current(amps) (N/A∙m) orTesla L-length(m)

  5. Example A wire 1.0m long carries 0.50amps of current. If the force acting on the wire is 0.2N, what is the magnetic field strength the wire experiences? F=BIL 0.20N = B(0.5Amp)(1.0m) B = 0.40 N/A∙m

  6. B = 0.4N/A∙m I S N F =0.20N

  7. Alternating current- Current that reverses direction due to a force and a magnetic field acting on a wire. F *Use right hand rule B F S N C A F D F Point (A)- Current is outward Points (B) and (D)- no current, force is parallel to field Point (C)-Current is into the wire

  8. Graphing Alternating Current IMax A A B B D t 0 D -I max C C *Commercial frequency is 60Hz so current changes direction 120 times per second!

  9. Diode- Converts AC to DC by limiting the direction of the current flow I t

  10. Graphing Direct Current I max t Doesn’t change direction

  11. Generator-Rotating loop in a magnetic field that produce a current. Current changes direction every ½ cycle (AC). F An outside force causes the wire loop to rotate inside a magnetic field. The current changes direction due to the loop in the wire. F

  12. Motor-Uses a current in a magnetic field to generate a force. This force allows work to be done by the motor.

More Related