Faraday's Law of Electromagnetic Induction, Magnetic Flux & Induced EMF - Physics & Electromagnetism

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This physics video tutorial provides a basic introduction into faraday's law of electromagnetic induction. It explains what it takes to induce a current in a second coil. A changing magnetic flux produces an induced emf in another coil. This video on electromagnetism contains an example problem with multiple parts that asks you to calculate the induced emf, the induced current, and the power dissipated by the resistor.
Magnetism - Review:
• Magnetism, Magnetic Fi...
Faraday's Law of Electromagnetic Induction:
• Faraday's Law of Elect...
Lenz's Law - Induced Current:
• Lenz's Law, Right Hand...
Induced EMF In Moving Conductor:
• Induced EMF In Moving ...
Electric Generators & Induced EMF:
• Electric Generators, I...
______________________________
Counter EMF of DC Motors:
• Back EMF & Counter EMF...
Transformers - Physics Problems:
• Transformers Physics P...
Mutual Inductance & Solenoids:
• Mutual Inductance & So...
Self-Inductance of Inductors & Coils:
• Self Inductance of Ind...
How To Make an Electromagnet:
• How To Make an Electro...
_________________________________
Faraday's & Lenz's Law of Electromagnetic Induction:
• Faraday's & Lenz's Law...
Energy Stored In an Inductor:
• Energy Stored In an In...
RL Circuits - Inductors & Resistors:
• RL Circuits - Inductor...
Final Exams and Video Playlists:
www.video-tutor.net/
Full-Length Videos and Worksheets:
/ collections

Опубликовано:

20 дек 2017

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Комментарии : 176

@TheOrganicChemistryTutor 6 месяцев назад

Final Exams and Video Playlists: www.video-tutor.net/

@josecastro5795 3 года назад

This man is singlehandedly keeping me passing my physics class

@dyl750 3 года назад

ON god bro. Doing my final project (12 page paper with a class demonstration that needs to be written up) right now, without this man id be fucked.

@angelikamaypardillo5612 3 года назад

Can i ask a question? In the magnetic field, what does the u mean in uT for example the magnetic field is 4.23 uT?

@tomlawrence1498 2 года назад

@@angelikamaypardillo5612 uT means microTesla, and u means micro which is a prefix which makes the SI unit (in this case it’s Tesla) x10^-6 smaller

@rebeck6651 2 года назад

@@tomlawrence1498 4 months late but u got there!

@asshivam8117 2 года назад

Master Faraday's Law in just 12 minutes for FREE!!! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZmSgzhZb13U.html

@photoluver4life 5 лет назад

My physics exam is in an hour and you just changed my mark. Thank you sir

@anotherdoseyt 5 лет назад

Armin Buijs mine is next week

@fast_gtr 5 лет назад

@@anotherdoseyt You must be so bad ass.

@Jack-uj7wu 4 года назад

coincidence .I am from China and our exam is also in a hour.

@d_wang9836 3 года назад

@Leonidas Zechariah Oh, these bots aren't completely dumb. Next time don't make the accounts on the same day and youll be a bit more believable.

@yinan6867 3 года назад

how did you go?

@shia_a319 5 лет назад

I would love to take a moment of appreciating your voice bro it's very soothing Idk why but it Lets me wanna hear more 😂

@arulgk9673 4 года назад

Shia Faith IKR

@Mikein203 4 года назад

His calm and gentle voice honestly is what helped me be able to grasp exactly what he's referring to. I have absolutely no knowledge of this field but I do now 🙂. I just hope that smile doesn't turn into 🤪 after messing around later. Thanks a lot for explaining in great understanding detail.

@sam-bl5co 4 года назад

Kim

@pilboxtv211 3 года назад

Yeah. You're right haha

@mosesagwom4758 3 года назад

Lols that voice makes you understand everything

@baumau6954 5 лет назад

Omg thank you , it was really simple and easy to understand Also your voice is amazing

@JettisonM 6 месяцев назад

This is AWESOME!! I’ve been out of school for decades and needed a refresher, I didn’t realize just how long being out of school would affect my comprehension rate until I started watching videos to learn again. I say all that to thank and commend you on your ability to slow/break things down so they’re easily digestible. And thankful you don’t have the “nail on a chalkboard” sounding voice/microphone. Thank you so much for sharing your knowledge for free.

@germanbrethren9320 6 месяцев назад

I think that you are have a very relaxing, calm voice. I’d listen to your lessons any day. But the way you break down a complex topic is a gift. I’m going to tell friends about your talent. Best wishes!

@stu4math 2 года назад

Great explanation of Faraday's Law of Electromagnetic Induction. Pretty clear and concise. A change in magnetic flux induces an EMF in a loop of wire. Keep teaching :)

@SumbaJr 3 года назад

This video made it look so easy I wonder what I didn't understand before... This is just so good ❤️

@asshivam8117 2 года назад

Master Faraday's Law in just 12 minutes for FREE!!! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZmSgzhZb13U.html

@yungmaz13 4 года назад

This video is very helpful, make more please.

@amirmirzababapour6016 5 лет назад

The video was well made. Thank you

@kennedyg7 5 лет назад

Very helpful videos!

@andrewyankowski3546 Год назад

Great video, I’m 50 years old and just wanted to watch something random I did 30 plus years ago (before RU-vid😂) You’re a great teacher and speaker!

@jesusmrosario-claudio4104 3 года назад

Thank you once again.

@mohamedeswey 5 лет назад

I love you man 😍 thanks so much you are really the best

@antondiffering4727 5 месяцев назад

Very good video/lecture. I wish I knew the direction of current flow!

@daniel-romero 2 года назад

Thanks for the video. In the first example, there must be no current in the right coil since a voltimeter is an open circuit.

@blaiseanguhkwondigah6408 4 года назад

Thank you sir.

@brianopiyo3885 3 года назад

Just like the way you explain concepts,,,,I can comfortably dodge lectures coz am okay with this🥰

@panosjretos 2 года назад

Excellent!

@rahmeenmujahid8071 Год назад

Well, my teacher sometimes is more confusingly obfuscate,trying to make things clear but that baffles me....... GREAT JOB MAN

@joselinegallant7442 2 года назад

Much love my brother

@stlpoornima8506 5 лет назад

Thank u so much

@agathernakiweewa3934 8 месяцев назад

thank u so much i have an exam on Tuesday this is helpful.

@debax2016 5 лет назад

Ooh wow thank you so much

@novictim Месяц назад

Thank you so much

@mysteriousyounglady8990 3 года назад

Thank you.

@Dannydefeato25 4 года назад

Please do one on biot savart! I'm so confused

@ayehufekadu1392 4 года назад

Man u are so good enough at it....i wanna u to be my teacher.....

@tochukwuchigbo6026 Год назад

I acually thought the angle should be 90 degrees because the magnetic field is perpendicular to the coil

@choji9739 3 года назад

A 50 turn coil has a resistance of 2.5ΩΩ If it is enclosed in an area of 25 cm^2cm2, what would be the rate of change of a magnetic field parallel to its axis to induce a current of 0.5 A in the coil?

@michaellamoreaux4402 5 лет назад

Only in the case of the moving magnet was the emf caused by the change in flux. In the other two cases the emf was caused by the motion of the wire through the magnetic field. Faraday's Law obfuscates the principle involved.

@mariahdivineb.sanchez5205 2 года назад

thankyousomuch!!! 😭😭💋💗💗

@lancearmada 3 года назад

Im curious as to why it is the full area not the circumference of the area the wire makes up because the electrons only flow through the wire and not the area the wire encompasses. Maybe that is already taken into consideration by the equation somehow?

@MFR571 5 месяцев назад

Thank You

@zzeynep2813 2 месяца назад

thank you so much from Turkey!

@nadhifaauria2129 4 года назад

thank you

@andoro_C 5 лет назад

nice explanation XD

@yousefnyungwa2388 5 лет назад

@abbasmillwala8038 5 лет назад

How do i calculate amperes if there is no resistance connected in the circuit

@sharifulhoqueakash6507 3 года назад

i cant understand the angle determination with respect to nomal line as well as the imaginary normal line difination ,,can anyone please explaine it??

@vav5838 2 года назад

In your other video you said induced emf and induced current are the same thing, but here you equated it to voltage. Which one is it?

@casiplejeremyandrewh.2466 4 года назад

This is helpful on my study for my incoming exams this Monday wish my luck.

@billybuck2713 3 года назад

howd you do on your exam bro?

@user-fq1ze8ze4d Год назад

howd you do on your exam bro?

@casiplejeremyandrewh.2466 Год назад

@@user-fq1ze8ze4d I passed.

@casiplejeremyandrewh.2466 Год назад

@@user-fq1ze8ze4d I passed and I am graduating This year also thanks for asking mate!

@julianaemnas2180 2 месяца назад

Dang me too😭🥲

@royals9074 4 года назад

Thanks

@serjordan13 4 года назад

I have a test in 2 days and I'm just now understanding the material. Thanks a lot!

@shypd Год назад

lmao same

@Terrorblazer 11 месяцев назад

would it be easier to calculate power using power = current * voltage (in this case EMF) instead

@tizz_games2594 2 года назад

How do I know which is the final or initial Flux or time

@KoreaRwkz 2 года назад

Hard to understand why the area that the coil of wire encompasses, or the total flux it encompasses, will be a factor. Why would it matter to the electrons inside the wire?

@mesarypaul5824 2 года назад

@7:45. How do we know it’s magnetic field is parallel to the normal line?

@kernelparadigm 2 года назад

they then represented by a cross or a dot.{into or out of coil}

@mcmerry2846 2 года назад

What device you use as the blackboard??

@lilscrappyfella 5 лет назад

i love u so much

@notserpify 5 лет назад

If the resistor has a current flowing through it, it also has a voltage drop, but the wire is shorted and must be the same voltage everywhere in the wire, assuming a perfect wire. This contradicts the current flow. Can anyone explain why this way of thinking is wrong? Can we not use circuit analysis with emfs? My professor took an LED and connected both of the legs together in a loop held it in an alternating magnetic field and it lit up the LED. Im having issues understanding what the voltages on either side of the LED would be.

@mann_mishra05 4 года назад

Damn u nerdy! I didn't get a single word u just typed

@notserpify 4 года назад

Why are you watching this video then? lol

@ddee_6234 8 месяцев назад

as an international student studying engineering major in her third language, you are my savior. Thank you so much!!!

@alihazem1479 Год назад

What do you mean by normal line in 5:48, and how do we find it ?

@pnksubs7764 3 месяца назад

the normal line is perpendicular/90 degrees to the magnetic filed lines

@pirate1367 2 года назад

Show some love guys. What a kind man.

@runbou3485 2 года назад

Thanks you អរគុណបង👏

@seanlicht6083 4 года назад

Are there any books on this that would help someone that has 0 experience or knowledge on the subject. I would like to build a generator

@wendellbalagot7660 4 года назад

Textbook of electrical technology by BL theraja

@thepaper888 4 года назад

Thank you

@dawnofred8524 3 года назад

shouldn't the angle be 180 instead of 0 between area vector of the coil surface and magnetic field vector.?

@AshfaqAhmad-ob8ov 2 года назад

I think you are taking care of minus sign in the equation e = - N dՓ/dt. But it is misleading. What I suggest is that the angle between two parallel vectors is zero not 180.

@tochukwuchigbo6026 Год назад

@@AshfaqAhmad-ob8ov I acually thought the angle should be 90 degrees because the magnetic field is perpendicular to the coil

@xpellidagoat Год назад

If i get gold in physics bowl I'm coming back here to edit my comment

@KhurushGDL 3 месяца назад

How'd it go lol

@MsFMS-hv6zl 3 года назад

Ima die, I have a chapter in physics I don't understand and my final exam is tomorrow. R.I.P my grade.

@anjoliebarrios8906 3 месяца назад

Strange that your "physics 120 final exam review" video doesn't include Faraday's law, but not a big deal since i found this video.

@rodolfoorellana1365 3 года назад

Does anybody know what happens with the negative emf? Like what does it means if it was negative?

@user-tc2gd3vg4t 3 года назад

the minus sign is due to Lenz's Law and it is because of the conservation of energy. "the direction of the induced emf/current is such that it opposes the change which created it." basically the magnetic field that was produced as a result of the induced emf is in the opposite direction to the original changing magnetic flux/field.

@kabandajamilu9036 3 года назад

So nice my teacher please make for us Maxwell's equation sir

@DEPIndFPV 3 года назад

Shouldn't power dissipated be multiplied by the time? 1280 is the wattage meaning the energy dissipated per second (j/s).

@vav5838 2 года назад

This is late but in case anyone else is wondering: time is taken into consideration. An amp = 1 coulomb per second.

@mwapechifulwa9044 2 года назад

Here in Zambia even our lecturers watch your videos 🤧

@lovekaushik3501 2 года назад

Why flux have cosine function

@alexshang6368 2 года назад

I hereby declare this guy as the God of Knowledge. Anyone who disagrees can fight me.

@arion9696 9 месяцев назад

Paddy Taringer - "Wanna fight about it"

@bugraokumus8925 5 лет назад

Adam... Heykelini diksen tassagina beton yetmez.

@DapaChrons 4 года назад

what do you mean by normal line?

@wadha2314 4 года назад

DapaChrons an imaginary line perpendicular to the surface of the coil

@erlin7125 4 года назад

Yes I was confused here too, but he’s talking about the angle between the normal line(line perpendicular to the surface of the coil) and the magnetic field line which just so happens to also be a perpendicular line yielding a 0 degree angle because they are the same line.

@hbk4984 4 года назад

What is the normal line?

@kevincalma4372 4 года назад

Line that's 90 degrees from the surface

@hbk4984 4 года назад

@@kevincalma4372 haha i have passed the exam and i got 14.5/15 it was 3 month ago before this shit spread out

@Topspeedcraft 4 года назад

Back when you actually worked with numbers and not abstract vectorial identities

@jeromegrey5089 4 года назад

What app did you use to record this?

@malakmohammedahmed3169 11 месяцев назад

10:22 Why did we make it positive?

@pnksubs7764 3 месяца назад

because the negative is not necessary, it's only there to show that the magnetic field created by the current opposes the change in magnetic flux

@reemsalim9243 4 года назад

the only one i wacth...

@KRISTIANFIGUEROA123 Год назад

Mark wahlberg did it again🙌🏽

@vichy5210 Год назад

1:37

@Humaka01 2 месяца назад

Man you have a video for every possible problem dont you 😅

@hpvide 3 года назад

I didn't get why angle is zero

@spikebg2911 4 месяца назад

🐐🐐🐐🐐

@nikedrike2932 3 года назад

Who are these dislikes? Slap them.

@thejudicious6342 5 лет назад

Kaway kaway sa mga magboboard dyan!

@skinach 4 года назад

huh?

@calebcoordom3855 Год назад

My physics teacher stutters while he speaks and when he is done I don't understand what he has just explained.😔😞

@calebcoordom3855 Год назад

But you are the best teacher that I ever had

@user-lx2cb4gx4x Год назад

Where are you from

@rahmeenmujahid8071 Год назад

Well mine is more confusingly obfuscate,trying to make things clear but that baffles me....... GREAT JOB MAN

@milindfoulger1682 2 года назад

Got a test in 2 hrs 😭😭 god help me

@Rah_4_Man 2 года назад

Me in 30 minutes 🤷🤷

@milindfoulger1682 2 года назад

@@Rah_4_Man good luck brother

@BigBlastP 4 года назад

Why the fuck is there a voltmeter measuring the current.

@user-dm3vj1bp1p 2 месяца назад

I have finals exams tomorrow wish me luck

@abdulmuttallibaregbe684 2 месяца назад

How was it

@hayaalmansoori5905 6 лет назад

I GOT E= 72V not -160v

@malakdaou1128 6 лет назад

its -160, you must have done a math error.

@eve8348 3 года назад

do you like this position, do you like this position

@jayveeilagan2303 3 года назад

STEM pa mga tanga

@martingregson7136 Год назад

menetic?????

@seancooper5083 4 года назад

Faraday's Law is the wrong title its James Clerk Maxwell equations.

@panos21sonic 8 месяцев назад

bruvva thats not how you symbolise phi...

@joewtjjoewp1 3 года назад

If you repeatedly press 1, you can hear him repeatedly say the N-word.

@lumpi806 3 года назад

BADvideo, because you are ambiguous about the signs and facing of a lot of IMPORTANT things : the angle between B and the normal vector of the surface is not clearly explained. The sign of the induced EMF and also the sign of the current are IMPORTANT things when you study induced EMF.

@PinkeySuavo 4 года назад

This kind of math seems so useless, I wonder how (if even at all) they used it 200 years ago. How to calculate magnetic field? How to get these data? All magnets are different, differently shaped. Is there any way to use such formulas for home purposes?