Magnetism, Magnetic Field Force, Right Hand Rule, Ampere's Law, Torque, Solenoid, Physics Problems 

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I go to a private university here in Egypt, and pay huge amounts of money for tuition yet, I get not even 50 percent of the teaching you provide. Thank you for always making every subject as easy and understandable as it could be. You are seriously awesome !!

You’re literally one of the best communicators, and have a real gift at explaining concepts, complicated or not, in such an easy to understand manner. You explain it so well, that is almost impossible to not understand it afterwards. I can’t thank you enough for all your indirect help from your videos. Especially allowing us to view them for free is the real kicker. You have a great mind and a big heart to put the time and effort into your playlists. I’m going to school for my BS in mechanical engineering, and you literally helped me get straight As through all the pre req engineering courses, Calc based chem1&2, Calc based Physics1&2, and Calc 1&2. Please keep up the great work!!!! You rock!

For people like me, who can't understand something without understanding the basics first, the explanation with the X, Y and Z direction helped so much!

Man, its not even worth it to attend 3 weeks of physics lectures anymore. This video taught me better in 1 hour, absolutely talented individual, tysm

At 5:30, there's an error. The arrow for the distance in magnetic field strength equation should be opposite. I ^ = B ^ R *(down)* = B ^

honestly I should be paying this man several thousand a semester over my professors bc he teaches me way more and doesn’t judge me when I don’t understand how to do this lol

Only reason why I'm passing Physics 2

This one video sums up 2 weeks and 7 lectures for my physics class. 7 years later, THANK YOU!

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4:04 strength of the magnetic field 6:31 simple wire, find magnitude and direction of the field 2cm away 9:14 a wire has 10a current. at what distance will a specific field be produced 11:52 current wire inside a magnetic field 14:48 more but with directions 17:40 a wire carries a current in the presence of a magnetic field. whats the force on the wire 19:45 a current flows west through a wire that experiences a magnetic force, whats the strength of the magnetic field which is directed south 23:05 rectangular loop with clockwise current. only a portion is in a magnetic field . where will it move? 27:15 magnetic force on a single point charge 29:13 example 32:27 a proton moves east at a speed, in a magnetic field. whats the magnitude of the magnetic force acting on the proton 34:59 proton moving to the right in a magnetic field, where is the magnetic force. it turning/going in a circle 38:02 centripical force jazz 39:17 centripical problem 45:27 paralel wires 48:43 magnitude of the force between two wires 50:44 what is the magnitude and direction of the force between two wires that are x distance appart travaeling in the same direction with the same current 53:08 ampears law 55:32 solonoid 1:01:57 a solonoid has a lengt of 15 cm and 800 turns of wire, what is the strength of the magnetic field if the current is 5 1:06:39 some loop thing 1:18:40 torque

The money I pay in school, I should have been paying this man and even more. I don't attend classes regularly but do better than those always in class in chemistry, physics and maths. May God continue blessing you for saving lives.

Up until this point I’ve only been using Flemmings Left Hand Motor Rule to determine the direction of force, magnetic field and current. The technique you showed here with the palm of your right hand is so much easier to use and remember. Thank you!

His notation of current out of page or into the page is incorrect. Current flowing out of the page, meaning towards you the viewer, should be a dot. Current flowing into the page, meaning away from you the viewer, should be an X. I was just confused, figured it might help someone out.

thank you very much, sir, now it's been 6 years since this vid was made and yet there is no brief,excellent and understandable video of electromagnetism. you are so talented in a way you can make everyone to understand physics and the vids on chemistry and maths are also awesome . what a blessed mind , thank you.

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Thank you very much. I'm Italian and I've found this video really helpful and useful because I've learned something about the magnetic field and part of the mathematical English language at the same time. Subscribed. 😃✅

I learn more from you than my actual teacher, you literally cover everything I learn in lesson, and I know once I get arch your video I’ll finish knowing that I now understand

This video discusses magnetism, magnetic fields, Ampere's Law, torque, solenoids, and physics problems. It explains the relationship between current and magnetic fields, the right hand rule, and how to calculate magnetic forces and torques in various scenarios. The video also covers the concept of magnetic dipole moments and the calculation of magnetic fields in solenoids. Key moments: 00:01 Magnetism involves attraction and repulsion between poles. Magnetic fields are created by moving electric charges, illustrated by the right-hand rule. -Illustration of magnetic field using the right-hand rule. The direction of the magnetic field around a wire can be determined by the direction of current flow and the curl of fingers around the wire. -Calculation of magnetic field strength. The equation B = u0 * i / 2πr is used to calculate the strength of the magnetic field created by a wire, where u0 is the permeability of free space. -Relationship between current and magnetic field strength. Increasing current increases the magnetic field strength due to direct proportionality. Decreasing distance weakens the magnetic field due to inverse proportionality. 08:03 Calculating the distance from a wire for a magnetic field strength involves using the equation involving current, magnetic field strength, and constants. Understanding the relationship between current, magnetic field, and magnetic force is crucial in physics. -Converting distance units from centimeters to meters is essential in physics calculations. One meter is equivalent to 100 centimeters. -The calculation of magnetic force involves the current, length of the wire, and the angle between the current and magnetic field. Increasing current or magnetic field strength results in a higher magnetic force. -The right-hand rule is used to determine the direction of the magnetic force acting on a current-carrying wire in a magnetic field. The force is perpendicular to both the current and the magnetic field. 16:07 Understanding the right-hand rule helps determine the direction of the magnetic force on a current-carrying wire. The magnitude of the magnetic force can be calculated using the formula F = ILB. -Using the right-hand rule to determine the direction of the magnetic force based on the orientation of the current and magnetic field. -Calculating the magnitude of the magnetic force on a wire using the formula F = ILB. 24:10 Understanding the right-hand rule is crucial for determining the direction of magnetic force. Magnetic force on a moving charge can be calculated using the equation F = Bqv sin(theta). -Right-hand rule helps determine the direction of magnetic force. Thumb points in the direction of current, fingers show magnetic field direction. -Equation F = Bqv sin(theta) calculates magnetic force on a moving charge. Current, charge, velocity, and angle are key factors in the equation. -Magnetic force direction depends on the orientation of charge and magnetic field. Use the right-hand rule to determine the force's direction. -For negatively charged particles, magnetic force direction is opposite to that of positively charged particles. Reverse the direction for negative charges. 32:15 A proton moving in a magnetic field perpendicular to its velocity will follow a circular path due to perpendicular forces. The radius of this path can be calculated using the equation r = mv / Bq. -Perpendicular forces cause a moving proton to follow a circular path in a magnetic field. The magnetic force acts as a centripetal force. -Electrons moving in a magnetic field experience a force opposite to protons, leading to circular motion in the opposite direction. The radius of the circular path can be calculated using the equation r = mv / Bq. 40:18 Calculating the radius of a proton's path involves using the speed, magnetic field strength, and charge. The energy of a proton in electron volts can be found by converting its kinetic energy. Wires with currents in the same direction attract each other due to magnetic forces. -Calculating the radius involves speed, magnetic field strength, and charge of a proton. The radius is found to be 2.09 centimeters. -Converting the proton's kinetic energy to electron volts gives 130,703 eV. The process involves understanding the relationship between joules and electron volts. -Electric potential is explained as energy per unit charge, with 1 volt equaling 1 joule per coulomb. The charge of an electron and its energy in electron volts are discussed. -Wires with currents in the same direction attract due to magnetic forces. The right hand rules are used to determine the direction of magnetic fields and forces between wires. 48:22 Understanding the force between parallel wires with current in the same direction, calculating the force magnitude, and applying Ampere's law for magnetic fields are essential concepts in electromagnetism. -Calculation of the force between two parallel wires with current in the same direction involves using the formula F = μ0 * I1 * I2 * L / 2π * R. -Ampere's law describes the relationship between current and magnetic fields, stating that the sum of magnetic fields around a closed path is equal to μ0 times the current enclosed by the path. -Solenoids, consisting of multiple wire loops, create strong magnetic fields at the center due to the cumulative effect of current loops, making them useful for generating powerful magnetic fields. 56:46 The strength of the magnetic field in a solenoid is directly proportional to the current passing through it and the number of turns per unit length, while inversely proportional to its length. -Increasing current or the number of turns per unit length in a solenoid enhances the strength of the magnetic field. -Decreasing the length of a solenoid also increases the strength of the magnetic field. 1:04:33 A current-carrying loop experiences torque in a magnetic field due to the force exerted on its sides. The torque formula is T = nIABsin(theta), where n is the number of loops, I is the current, A is the area, B is the magnetic field strength, and theta is the angle between the field and the normal line. -The torque on a current-carrying loop is due to the force exerted on its sides by the magnetic field. The force is perpendicular to both the current and the magnetic field, resulting in a torque that causes the loop to turn. -The torque formula for a single loop is T = nIABsin(theta), where n is the number of loops, I is the current, A is the area of the loop, B is the magnetic field strength, and theta is the angle between the field and the normal line. 1:12:56 Torque on a coil is greatest at 90 degrees between the magnetic field and the normal line of the coil, resulting in rotation. At 0 degrees, there is no torque due to parallel forces. -Explanation of torque at different angles. -Illustration of equilibrium at 0 degrees. 1:20:43 To find the maximum torque in a magnetic field, multiply the number of loops, current, area, and sine of 90 degrees. The magnetic field can be calculated by dividing the product of these values by the torque. -Calculation of maximum torque involves multiplying the number of loops, current, area, and sine of 90 degrees. -Solving for the magnetic field requires dividing the product of loops, current, area by the torque value

First 3 mins One of the Right-Hand Rule 15:30 Another Hand Rule 24:27 Hand Rule for a relatively difficult problem (changing direction of force) 31:00 Hand Rule with respect to velocity

I thought I understood this pretty well, until I confused myself by looking through the bewildering array of right and left hand rules here on the internet. Your video regrounded my understanding, thank you. Those other rules, with variable assignment of fingers and hands depending on the circumstance, were just too confusing.

who’s watching this during quarantine

What an absolute MADLAD. This is almost everything we covered for this upcoming test. Couldn't pay attention in class but i'm getting a good grade now thanks to you! Love your video, will keep coming back.

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Man wtf i spend two week in class now learning a single thing and it only took one video to teach me everything????

Man you deserve Nobel prize for excellence in teaching methods

When online physics is taught by a boomer Go to the Organic Chemistry Tutor

🙏🏽 can’t believe I found my own way here I’m so happy that I figured out how to apply math in my life

Love your videos, you ease alot of the anxiety that comes with learning these things with your well thought out explanations and train of thought that all flow very easily. Much thanks and appreciation from me!! :)

thank you so much for the work you put into these videos. the teachers at my school don't teach each topic specific​ enough, so i always have trouble in catching up. your videos help me a lot!! thankyou

Just passed physics thanks to this guy 🤘🏽

I'm learning this content in high school for free but I still feel the need to pay this man.

just thank you, saved my life

Thanks man! you saved my life! great step by step explanation! Explaining every single detail, although the end part was a bit confusing I understood everything!

Physics test tmrrow morning. Let's see how it goes hehe.

at the example: 4Pi*10^-7*I / 2Pi*r I simplyfied with 2*10^-7*I / r and got the same result. Very nice video bro

got my physics exam in about 3 hrs, cramming in as much as possible.

I thank god everyday for this man

shouldn't magnetic field (B) increase as distance from the wire (R) decreases?

at 2:50 there is a small mistake. The right hand rule only applies for the tecnical electric current. where the theory is that the movement is from + to -, when in reality it is the reverse case. So usually you would use the left hand, but the same rule

May each and every one reading this comment be blessed and may Allah/God fulfill their heart desires.

you are the brilliant JG im just wishing to see you atleast one day and im very thankful for your great videos and secondly, your explanation is 99 % clear

I should've skipped the last 2 weeks of class and just watched this video instead, sending links to everyone I know

Your explanation at 05:26 contradicts what you wrote. You drew the arrow for R pointing downward when it was supposed to point upward. But the explanation is perfect. Thank you.

Great video my friend I really like that you use such simple examples. It makes learning the equations and understanding the relationships between the variables quick and easy.

You have been helping me so much all summer. Just wanted to say how much I appreciate it man!

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at 5:55 the B suppose to increase when R decrease right...because its is inversely propotional.....??

Thanks for the video man it really helped me understand this stuff a lot better than I was taught in class at university

I came here without having a test to take urgently. I guess I'm improving.

Best teacher ever

the sentence that i love most , "we can get rid of it" :)

Honest to God, i passed my physics unit test watching his video, thank youuuuu !

1:04:58 when I use the right hand rule, the force goes out of the page? I'm confused about that.

Thanks man I finally understood magnetism ! I was struggling real hard for physics especially this chapter but you have saved me 😎

*Organic Chemistry Tutor* : posts me, notices timestamp: *clicks 1.5/1.75 speed furiously*

This man summarised my entire trimester

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Thanks you’re the best physics teacher in youtube

Low voice is the only problem, I even used subtitles for better clarity. ABOVE ALL, I THANK YOU MISTER.

love how you power through these

Thank you for being better than my professors! Been watching these as well as your calc 2 videos to either brush up (or full on learn) the content that I need to know for my exams and tests. You've been a lifesaver and make them much easier to understand! Don't stop making the videos you're helping so many people! Just wanted to say thanks!!!!!

Very informative video, thank you. @5:30, you wrote R going down, B is also going down. I think you meant to write that R going up, B is going down. Thanks.

Wow what a great video thanks.

Thank you for saving my academic life😭

It's my junior highschool year... Kinda intrested in these concepts.

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at 5:37, you say that magnetic field decreases when radius decreases but isnt it the vice versa? i.e. the magnetic field increases when radius decreases?? also at 22:38 you say its out of the page but i think you drew the left hand instead of the right so it is into the page

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Just learned an entire 3 weeks of content in 1 hour, thank you so much

I just learnt more in one hour than in an entire semester at college

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Typo at 6:00 when R goes UP B goes down.

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The relationship between R and B is inverse, as the OGT said, but he wrote it down incorrectly. It should be: I ⬆️ B ⬆️ R ⬆️ B ⬇️

Where is moving coil galvanometer ?

For applying the right hand rule for the current, magnetic field and magnetic force, it might be easier to have you thumb as F, your pointer finger as I and the remaining three as B.

Physics is rough but these legacy videos are coming in clutch. Thank you for the clarity and brevity.

Thank you so much for your explanation of magnetism. You explain the subject matter way better than my textbook.

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5:30 the arrow should point upwards for R, since it is reversible related to B.

Not sure if this will get answered because this video is quite old, but with the strength of magnetic field at 16:09 is the magnetic field still wrapping around the wire current, or is it travelling horizontally?

Man, magnetism is easy af with your lessons! I couldn't understand a word when I read that on my book. Thanks )

Magnetic fields introduced during water electrolysis double the hydrogen output when the magnetic field is parallel to the current flow. I'd say this experimentally disproves the magnetic field doesn't add kinetic energy to the electrons when parallel.

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I am a huge fan of your videos! Everything from Organic Chemistry to Physics has been so helpful! A friendly suggestion would be to add timestamps in your description to help your viewers follow along or skip to the part they are most confused about :)