Physics 36 The Electric Field (8 of 18) Ring of Charge

In this video I will find the electric field of a ring of charge.

[RRyan]

You took 12 min to (successfully) explain a concept that my physics professor took 50 mins to explain and only succeeded in putting me to sleep. Keep up the good work!

[MichelvanBiezen]

Faruk,
When you integrate, you take an infinite number of dq elements and add them up.  so each pair on opposite sides will cancel and only the horizontal components remain and add all up in the same direction (positive x-axis).

[SuperAbood]

Professor you’re a life saver, my professor made this like it was rocket science

[memescoper]

Just wanted to let you know that you are the man and a great teacher, keep these videos coming!

[charlieGEE]

You are the savior of my sanity. Thanks a bunch for these videos man!

[sheeplord]

Your explanations are excellent. Thank you for not just throwing in variables out of nowhere

[tonytruong]

I'm proud to be a student at El Camino Collge in which 16007 Crenshaw Blvd, Torrance, CA 90506. Thanks
Professor Michel van Biezen.

[Sofialovesmath]

I was so confused when my teacher explained it but you made it crystal clear. Can't thank you enough

[jsk]

Dear lord... thank you... why can't my physics profs explain this like you

[ptyptypty]

Just for the fun of it... (fun???) .. I wanted to know where the E-field was at it's Maximum Value along the X-axis using the Derivative of the resulting E equation.... (Min/Max problem) wow, was I shocked to find that the Maximum value of E was at a distance of the RADIUS divided by the Square Root of 2 ... amazing.. thanks for the inspiration Michel... Physics is (I'm sure there are students here that would Argue that sentiment)

[tonymoh]

Can you use gauss's law? It probably is more difficult but I think it will help me understand whether coulombs law or gauss's law should be used.

[noorahamadalmarri]

Why didn't we multiply the final answer by two?

[jooorence]

I'm still uncertain how you got dQ = lamba(ds). Could you. Explain this further?

[jatinrathore]

Sir I have a doubt.Can Gauss's law be applied to this ring of charge.If no why can't we?

[HelenaMai]

You're great! thanks... May God bless you

[AAlrayes]

Thank you sir, but i have a question, if we replace the ring with a disk that has the same radius and the same charge is spread uniformly over it's area. Does the magnitude of the electric field at the same point increase or decrease or remain the same ?
I read that it's bigger for the disk but i think that it should be smaller because the distance between the lines of the electric field increased so the magnitude should be smaller, right?

[ilgincadam]

what if a>x ? doesn't it become like the basic E formula ??

[ambientsoda]

what is the significance of this ring?

[LoVeYoU]

How is the ring oriented? like is it facing the point we are measuring electric field from or is it adjacent?

[ramenazul]

thank you sir
may you had a good day
peace