Faraday's Law example | Physics | Khan Academy

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Example calculating induced current based on change in flux.
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[@qwwongs33]

0:50 what the f....

[@unknownnone8292]

初時雨 😂😂😂 He almost dropped the F-Bomb.

[@kathirrajmohanraj5221]

unknown none he was gonna say flux man..hahaha

[@sanazgholitabar2599]

almost

[@austin1up816]

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[@koyom3]

Good luck!

[@SpectrumSplit]

+Austin Finley Yeah, good luck! :)

[@EC-rd9ys]

Ah, thank you for describing what I need to do about that negative sign/Lenz's Law! Anything requiring use of the right-hand rule always throws me.

[@user-ws6mm8uw1x]

Lol 0:50 😂. Ousum video👍

[@sccm100]

I came here to see what was up with the negative in the equation. Thanks for explaining Sal

[@Guppin09]

is there any chance I could request a video? I find your videos very interesting and find it very easy to understand the information, I'm a first year nursing student struggling to grasp the concept of the nervous and mechanical processes during inhalation and inspiration (from the brain to the lungs, Medulla And Pons etc) Please could you help? it would be much appreciated! Thank You, Luke, UK

[@Guppin09]

Thank You!

[@sherklastic6073]

Without Khan Academy, homeschooled kids would all be idiots.

[@sherklastic6073]

***** Khan Academy saved my life. Voices and explanations > textbook

[@sherklastic6073]

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[@jaredrice354]

Sherklastic all kids*

[@joeya5438]

Its 4:27am and I have a Phys 2 exam in a few hours. I think I'm gonna ace it because of these videos.

[@lavs8077]

4 months later. 5:12 am. Been watching since 11pm and same.

[@alfredw3640]

Perfect!!

[@theunderworld3415]

man I love physics......

[@uceee1]

04:25 I think that negative sign comes from the BACK EMF idea. To reduce it from the supplied voltage in the electric motors...

[@MySoccer1997]

God bless you

[@braydeno4189]

This one really helped

[@wajumaster4531]

What happens if you go from the 10T to the 5T. Would the current still go in a clockwise direction?

[@donalmoloney2695]

What is the difference between faraday and lenz's law

[@JDoactive]

I know it's too late but for anyone else reading this,Lenz's law shows you which direction the current flows while Faraday's law tells you the magnitude

[@yousefhurani8822]

@@JDoactive thanks bro

[@sheetalgupta9984]

How can we increase or decrease magnetic field lines??

[@arisantoniadis4722]

I live very close to you like 1 minutes I'm in your neiborhood no joke

[@adletkapsan4106]

0:50 lol

[@baleia]

@ 0:11 khan says "the area of this ring would be four squared meters", i think he meant "...four meter squared" right?

[@LearnMathsFree]

+baleia He said "four square metres" -- which is another way of saying 4 m^2.

[@monsterous289]

Four meter squared would imply a square with 4 meters on each side.

[@saritapanday3413]

can you plz have mathmetical equation also

[@Mark-tv1zs]

flux = BAcos(theta) or if its perpendicular flux = BA (like in the video)

[@saifahmed7482]

Salute man!!!

[@jinjiwweee]

This is insane

[@turcugeorge5874]

Great video! Thank you, sir! Can somebody please tell me where I can find similar problems?

[@ickorling7328]

Why can't Sal let the current flow in the direction of the right hand? it seems like natural to me.

[@dikshagupta5971]

perpendicularly

[@daninguyen2593]

For the last part when you find the direction of the current, it should be the counterclockwise according to RHR !

[@garyphillips8123]

Tesla never agreed with Lenz on more than one equation

[@michaellamoreaux4402]

I have discovered that Faraday's law of induction is unintentional disinformation. In the case of a static magnetic field, if a circuit linked by the field expands, thereby increasing the flux linking the circuit, Faraday's law states that the changing flux produces an emf in the circuit. This is false; the changing flux linkage has no effect. There is an emf in the circuit of the same value as predicted by Faraday's law. It is motional emf due to the motion of the conductor of the circuit through the magntic field. Thus, Faraday's law is false. There are also exceptions to Faraday's law, as pointed out in The Feynman Lectures on Physics. Faraday's law is just math, not physics. It is a case of correlation, not causation. Faraday's law encompasses the Maxwell-Faraday law, which is one of Maxwell's equations. That part is true. That is why Faraday's law is like disinformation. It is partially true and partially false.

[@SotraEngine4]

Flux - something sci-fi writers loves to mention, but doesn't know what means

[@THEMATT222]

LOL

[@Tauntless]

first

[@kirankumar3908]

What the Flux :p

[@thejoshandnatechannel4184]

First

[@nickpierpoint4116]

And this my friends is how an induction motor works

[@garyphillips8123]

Sorry, but Lenz is wrong. Please remember that there have been bad laws in the past.