Faraday's Law Introduction | Physics | Khan Academy

How a current can be induced in a loop of wire by a change in magnetic flux.

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[toomuchcandor]

His digital handwriting is still better than my real handwriting..., , ,

[thrupthishetty]

I always turn to khan academy videos for better understanding of basic topics, it would be of great help if you have engineering topics too

[AlpNewYork]

Great timing, I'm taking electricity and magnetism and it's great to see you explaining these topics thanks.

[VonchkynProduction]

yes, please do more on electricity and magnetism. thank you

[kapilansatkunanathan]

I was about to drop the course then i saw this video thanks :)

[theflaggeddragon]

Will later videos have Maxwell's equations in them?

[Ruhit_]

Why is current not anticlockwise??? Isn't he using the right-hand grip rule?

[TKO]

Conductor+magnetic field+relative motion=induced current. You should do more electrical engineer videos.

[AyeToan]

In observing the cross section of a magnetic field:
- if the flux is increased in an anterior direction, a clockwise current is induced
- if the flux is increased in an posterior direction, a counter-clockwise is induced

[GINKking]

its good if u r speaking slow bcz we r from dfrnt countries

[vios]

sorry I still dont' understand how to determine the direction of current why it is clockwise?
is that " out of paper " means the current has to be clockwise ?

[omarel-yarakany]

In a previous video you showed the direction of current using the right hand rule indicating that it has same direction of the force, but when you increase magnetic flux i cant figure out the direction of force that creates the current

[whoaaa]

Does adding more loops also count as changing the area?

[KeenestObserver]

Why is there no induced current to begin with? The Flux isn't = 0, you only have magnetic field lines going one way and none going the other way. I understand that a change in flux induces a current, but you allready have flux to begin with, so what's going on? I feel like this topic isn't explained very well by most people.

[michaellamoreaux]

Only when the magnetic field intrinsically changes does it cause an emf in the coil. Any change in the flux due to motion of the coil has no effect; the emf is produced by the motion of the wire through the magnetic field. Faraday's Law obfuscates the principle involved.

[savlovesyou]

Isn't the current actually going in the counterclockwise direction? If you use the right hand rule and point your thumb toward yourself in the direction of the magnetic field, you would curl your fingers in the counterclockwise direction, right?

[ryanmarshall]

@ 2:53 - why does the current go clockwise?

[jonah]

This is technically just called Lenz law.

[ericlongteaches]

How do you know which direction the current is going?

[harshilkashyap]

But how does a changing magnetic field induce an electric current? What’s the physics behind it?