DC electric Motor

he forces on the wire segments of the current loop in an electric motor depends upon the geometry of the loop (relative to the magnetic field) as well as the direction of the current. This animation illustrates those forces and the role of the commutator in switching the current direction so that torque on the loop continues to keep the loop spinning.

Category:

Education

Tags:

• electric
• motor
• physics
• magnetic
• force
• physical
• science

[varavind]

Great Video. I wish we had the ability to slow down the animation, or play the same video repeatedly. Do you use 'vpython' for these simulations? I think I listened to your talk in one of the AAPT meetings?

[mrg3]

@varavind

I use POVRay directly, although I think it was Ruth Chabay who wrote a vpython to povray export tool some time ago. I'll often loop the video using the original media file and another player like quicktime.

You can grab almost all the videos from the project web site listed on my channel page.

Older videos are shorter from the days before bandwidth, and may be re-rendered.

And yes, that was me. I've given a couple of project update talks/posters at AAPT. :-)

[varavind]

Great; Thank you for your reply!

[gdtlc]

i have a question: do the two brushes must be perpendicular to the N-S axis?!or parallel? why?

[davza108]

Excellent! Thanks

[justyov]

EXCELLENT VIDEOO!!!!..... U`RE THE BEST

[adisep79]

I am a teacher and it is sumtimes very difficult to make the students understand electric motor as it requires a lot of imagination for the students and a great effort to visualise the whole set up. This video is just what i needed. Thank you very much.

[domyaska]

excellent video!!! now I understand much more!!!!!!!grazieeeeeeee

[coughyouallsuck]

how does what you just said even remotely apply to this video?

[ElPopularVale]

everything should be taught with animations, god they're so easy to understand