Magnetic Field of a Straight Current Carrying Wire

This physics video tutorial explains how to calculate the magnetic field of a wire. It provides the formula needed to calculate the magnetic field of a straight current carrying conductor at some distance away from the straight wire. This video also explains how to calculate the net magnetic field between two parallel wires. This video on magnetism contains plenty of examples and practice problems.

Magnetic Force on a Current Carrying Wire:

Magnetic Force on a Moving Charge:

The Homopolar Motor:

The Lorentz Force:

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Magnetic Sensors - The Reed Switch:

Magnetic Force Between Two Parallel Wires:

Ampere's Law - Magnetic Field of a Solenoid:

Magnetic Field of a Toroidal Solenoid:

Magnetic Field of a Moving Charge:

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Torque on a Loop - Magnetic Dipole Moment:

The Hall Effect:

Magnetic Flux:

Faraday's Law of Electromagnetic Induction:

Lenz's Law - Induced Current:

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Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[MrPeaty]

I just want to say, I have used your videos to help me study, and you are awesome. I don't think I would've passed any of my physics classes without your help.

[EthanGehrke-pt]

I do not know how you have a video on almost everything. You are truly amazing. Thank you for all of the hard work you put into your videos.

[sarahholland]

Thank you for the visual of how to tell what part of your fingers to look at for into/out of the page! I have been so confused about how to tell and this made it so clear. You're the best!

[dddhhj]

I just want to say I really appreciate your videos .Im a physics honours and although I m done with my master I still have troubles with my basics and Im all for relearning .
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[jamesmoushegian]

Thank you so much! I was really confused about these types of problems but not anymore

[johnbiz]

This is way helpful ever.. well done . Thank you.

[sanjaynair]

YOUR VIDEOS ARE SO GOOD U VERY MUCH...

[saraheid]

This is a very organised explanation thank you but I just wanna ask if the two parallel wires having current in the same direction then the resulted magnetic field between them will be out or in the page

[thatbluemiata]

omg why couldnt my textbook talk about the point below or above the pen/wire for the right hand rule??? Thank you so much I could never pass physics with just that useless book.

[mannews]

A current of 5A flow in a straight wire in a uniform flux density of 2×10−3 T . Calculate the force per unit length of the wire if it is perpendicular to the field?

[tanyatodd]

Is there a video for a SHORT wire?....where we include the length and angles in the equations?

[XLsize-xuun]

1:13 is the direction of magnetic field line of East correct? The direction seems to disobey right hand grip rule? I thought it should be same direction with the North which is anti clockwise....

[anthonywooten]

Im assuming this formula will only apply to conductors in DC circuits. DC conductors flow current in one direction. How would you calculate for AC?

[juliusbarwon]

Please help to solve refraction and Suspension also Len, electrodynamic and soon an finally I love your teaching

[Salamanca-joro]

Okaaaay so when finding the direction of the force and magnetic field we use right hand rule

[ahmedabdulkerimyusuf]

Sir: with all respect, are the magnetic forces which two wires carrying current exert on each other will be affected if the two wires are insulated (they are both have plastic covers)?

[alphonsekara]

My name is Alphonse Kara from PNG..I am really interested to explore my Physics contact with you...

[tatica]

what if i have B's and two of them are going out of the page and two of them are going inside the page

[Xscape]

6:34 shouldn't the magnetic field be the other way if your thumb is pointing to the right, with fingers wrapped inwardly facing you?

[thomash]

Can this be used to determine the magnetic field around a 3 phase electrical cable?