Where to put the third charge so the net force is zero

In this video, I explain how to solve a physics problem where you need to place a third charge on a line so that the net force acting on the charge is zero.

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[NaseemAkhtar-qp]

Sir plz keep continue making this type of series for every topic.. you never know how much you are helping us out more than our professors!!!🥺

[kimsordyl]

I am surprised this vid doesn't have more thumbs up. So helpful and prefect for MCAT review as well. Thanks!

[Olena-go]

Super ! Very good explanation!…The best among many!…Thanks!

[ahmarscott]

This has helped me!! Thank You God Bless!

[akash_]

Can't we bring (4+x)²/x² to one side and 8/5 to the other side and then apply roots on both the sides so we get...

(4+x)/x=√1.6
and on solving x we get the same value ...
Its quite fast to solve like this I feel.
Thanks a lot for the examples...it was a good revision 👍

[ItsSkyler]

Thank you! I was so confused on this topic but now it makes sense. 😁

[KipomaiKama]

You are the best ..so helpful 🙏
Thank you very much.

[SbongakonkeZondi-fq]

thank you so much, i have been so confused but you just made everything clear to me

[geoffphillips]

Brill vid !! Thnx . How would we calculate the magnitude of charge we add to make net force zero? I found this in a question & couldn't do it coz the new q kept cancelling out

[jadonw]

Hey dan, thanks for this. Why can we assume it is a positive charge for the second question. If it was a negative charge would its position be the same or on the other side.

[Adeline-lb]

Thanks a lot for this video!!! It helps me a lot and it is much clearer !!! I understand that it works for the Electric field, does it also work for Electric Potential?

[elbilala]

Which one is smaller 5c or -8c charge?

[m.m.m.m.m.m.m.m.m.m.m.m]

Why do you use the quadratic formula while you’re able to factor it normally?

[ishaannaik]

Dan I would suggest you to teach topics from an exam called IIT-JEE. Here in India it is undoubtedly the most competitive PHYSICS+MATH+CHEMISTRY examination.
I hope you'll research and bring some next level content :)

[ii_pr]

Why you took -x² while trying to make it equal to zero

[letsparty]

sir where would be the net charge if the both charges were negative

[Sarah-denm]

What if the two charges are -7 and 7 ?