Electric generator (A.C. & D.C.) | Magnetic effects of current | Khan Academy

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Let's learn how A.C. and D.C. generators (electric generators) work.

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Created by Mahesh Shenoy
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Flemmings right-hand rule confusion: There are two Flemmings hand rule. The left-hand rule and right-hand rule. The left-hand rule is used when an already current carrying wire in a magnetic field experiences a force. This is the case in motors. We pass current through the coil and the force due to field pushes and turns the coil. However in generators, we turn the coil and as a result, electric current is produced. To figure out the direction of this current, we use the right-hand rule.
Hopefully, this clears the confusion of why we use left-hand rule for Motors and right-hand rule for generators.

KhanAcademyIndiaEnglish
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when i tell you this man explained it better than the entire physics department at my high school, i mean it

darwinmurphy
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This video is so well explained that even a small kid could understand

nabeel
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I dont usually comment but I cant just ignore how good and informative this video is

ken.h
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Can we just appreciate how cleverly made these generators are

Sciencedoneright
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I've spent the past 2 hours trying to fully understand alternating current and generators, and this video has finally shown me

myshkinurmom
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Random Indian guy online > All Physics teachers in school with tons of degrees

guanghuima
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Thank you so much khan academy, for removing all the doubts of the students like us who face difficulty in understanding electric generator and motor. The animation were so perfect we didn't even get confused for were the current is you once again khan academy

kritikasinha
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The detail covered in that must have been the best I've ever seen.

jcronin
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I'm having a hard time paying attention in class recently, I got stressed when I couldn't figure out my homework questions. This video cleared up lot of my confusion. I feel more confident in understanding how generators work. Thank you Khan Academy, you've helped me with math and physics many times now.

emmawang
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I just love how you address and clarify every doubt that comes to our minds as we learn these concepts!

nandanamenon
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we dont deserve this dude, but he's here anyway. Thx man!

AaABbB-sgcr
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The best explanation for real. Thank you so much!

erika
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I have never felt this satisfied ...before ...Thanks to Khan academy for such a content filled video

joelnada
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Congrats man on such explanation! Better then all teachers who just use nonsense examples and overcomplicate. Thanks!

noabeti
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thank you!!! the animation is so helpful, trying to visualize this through 2D diagrams was so hard

sarahholland
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Finally! It hit a million! A milestone

Mahesh_Shenoy
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Thank you so very much Mahesh and your team. It was indeed an excellent explanation with loads of patience and intricate details where children and even adults might get confused.

aarushiarya
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This man is the best teacher I've ever heard. This was made so crystal clear, my 11yo son could understand it and use it for his science fair project. Thank you, sir.

RedDesertRoz
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This is the only video through which I have now understood about the generator.
Thank you!

smrutigupta