Eddy and Lenz' Law Explained

This video covers eddy currents and Lenz' Law using the well known demonstration of dropping a rare earth magnet down an aluminium tube.

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[HJeff]

The best explanation of eddy currents on Youtube. Thank you so much.

[clo]

left hand for negative electron flow and and right hand for conventional positive current. The video uses both without specifying which of the electron or conventional flow you're applying, which adds to more confusion to the eddy current with its arrow pointing to the electron flow direction. But for the sake of delivering the big picture concept, it does its job but could be improved if the above mentioned can be more precisely specified so students can have a more accurate understanding.

[framerate]

You just helped me understand more in 15 min than my physics teacher taught me in 3 lessons!!! Thank you so much!

[emilyhancock]

Really good - I was lost but now am found. I feel like a real electrical apprentice now. I’ll be able to play handball with peace of mind at my lunch break tomorrow. I owe my life and my trade. God speed big hoss x

[chaoyue]

Best explanation indeed. Thanks for showing how eddy currents are formed. Other videos usually don't explain this part

[GlidyBun]

I had struggled with this concept for literal years until I watched your video. Incredible.

[akhileshwarsingh]

I was tired of searching the you explanation was completed understood... thank you soooo much ☺

[hatchedcoast]

wow, hands down best explanation i've ever seen. Thank you!

[shanefrank]

Best video on eddy currents I have seen. Most of the others are much more confusing. But I have learned a right hand rule that works where you mention a left hand rule. For the right hand the thumb is the direction of movement, the forefinger is the direction of the field and the current is the middle finger (all orthogonal with each other). Of coursethis works the same way as your left hand rule.

[yasmine]

Thank you for this great explanation and the time you took to make a video of such quality!

[hightttech]

I've watched a dozen videos on this magnet/tube experiment; YOURS IS THE BEST 👍.

[James-ebph]

I think you could explain the direction of induced current using Fleming's right hand rule. Remember that motion is in the direction of the conductor. Relative to the magnet, the conductor is moving upwards (you could explain this to a student to imagine that you are holding the magnet still and pull the tube upwards), now you can use first finger = field and thumb = motion to obtain the correct direction.

[TekCroach]

❤ Actually the best explanation for eddy current.

[ppmm]

Best explanation ever. Pliz keep posting videos like these I have already subscribed

[stanleykania]

I am age 46 and entering triangle technical school for the electrician program and watching the videos here maybe helping me for my upcoming classes !!

[happyhayot]

Great explanation, very intuitive, now I understand this completely. Thank you very much.

[matei]

Best explanation on Lenz's law after a tiring search for the same. Thanks!

[AlexRamirez-pjvr]

in the example problem, i’m having a hard time understanding how the magnetic field is opposing the change in the initial magnetic field. i understand the explanation of how we get the direction going upwards inside the coil, but how does this support lenz’ law where “the magnetic field created by the induced current opposes changes in the initial magnetic field” if there are portions of the magnetic field that are actually in the same direction (like inside the coil)

[velcroman]

Back in the day. Micro Farad invited his girl friend Milli Amps for a ride on his mega cycle. It was a loverly day, they cycled over a whiet stone bridge and stopped in a magnetic field for a picnic. ….

[andrewjustin]

11:15 I could not wrap my head around this point that whether the drawn induced magnets, one on top and bottom, are horizontally oriented where one pole is going into the screen or are they vertically oriented as the real magnet is. Please clarify that.