Self Inductance of Inductors & Coils - Solenoids & Toroids - Physics

This physics video tutorial provides a basic introduction into the self inductance of inductors and coils such as solenoids and toroids. This video explains how to calculate the induced emf generated when the current is changing inside of an inductor. It also explains how to calculate the self inductance of a solenoid and the inductance of a toroidal solenoid. This video contains plenty of examples and practice problems.

Magnetism - Review:

Faraday's Law of Electromagnetic Induction:

Lenz's Law - Induced Current:

Induced EMF In Moving Conductor:

Electric Generators & Induced EMF:

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Counter EMF of DC Motors:

Transformers - Physics Problems:

Mutual Inductance & Solenoids:

Self-Inductance of Inductors & Coils:

How To Make an Electromagnet:

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Faraday's & Lenz's Law of Electromagnetic Induction:

Energy Stored In an Inductor:

RL Circuits - Inductors & Resistors:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[paulchigozie]

You made it so simple and easy to understand. I love the simplicity of your teaching. 👍

[ahmadabdel]

Thank you, I really do appreciate what you do

[samuelonyango-xtle]

This is great sir, You are assisting many across the world!

[jefflee]

Honest to god you make everything make fucking sense again. I hope you are having the best time of your life right now

[alexkerimate]

being an Indian American kid writing jee i never understood hindi teachers so thankyou so much

[QuangNguyen-vghr]

The video is very helpful and easy to understand. Keep up your great work! Thank you so much!

[JH-uxre]

Thank you very much! Cleared up my confusion! Gonna have my exam this afternoon.

[Sammy-hlwb]

Why is your equation for B different for each example?

[PetakyahBuckley-htiz]

What calculator are you using because mine is giving me different answers? Can you solve the problems without the calculator? It seems pointless to use one. What’s the chance you’ll always have a scientific calculator in all situations? This stuff should be practiced by writing.

[gooddeedsleadto]

I understand it is because of some law or principle, but why voltage and current decrease when current increases, and the opposite when the current decreases?
Underlying reason?
Thsnks

[fiyorbahr]

Check your calculator friends, he is genius teacher. JG keep up

[ahmednagi]

conclusion the self inductance depend on the geometry of coil?

[muselimulaima]

I have a question I still can't understand. Anyone to help will be helpful.

An iron of cross sectional area 800mm2 and of mean radius 170mm has two windings connected in series, one of 500 turns and the other one of 700 turns. If the relative permeability of an iron is 1200, find self-inductance of each coil and the mutual inductance, assuming that there is no leakage

[Ray-tfps]

How do i find the length of the self inductance

[jjdhdexter]

is the R in the toroidal solenoid the inner, outer, or mean radius?

[nur-kshp]

how you calculate L cause i get syntax error help me please

[hhersssc]

When the current changes rapidly 2 A \ s, in the solenoid, due to self-induction the voltage of 0.04V is induced. Can someone do this for me pls. I dont know how to and i tried.

[yungheehong]

First problem: isn't "L" supposed to be positive not negative?

[lilsamer]

there is some one who can tell me the formula of current in self inductance

[albertmendoza]

I hate plugging numbers into formulas. Lol