10. Advance Illustration | Electric Force and Electric Field | Free Ball at a Vertex of n-gon

The website, aimed at nurturing grasping power students, has classroom lectures on almost all the topics. It is an outcome of 23-year long toil of Physics expert who has made it a mission to simplify the complexities of Physics.

Ashish Arora, the brain behind this interactive unique website, has all his lectures available on web for free of cost. He has created a youtube channel in the name of Physics Galaxy. Today more than 6000 video lectures are being watched per day on this website which is highest among any other e-learning website in India. Till now more than 3.6 Million videos are watched on it. On each video subtitles are also available in 67 languages using google translator including English, Hindi, Chinese, French, Marathi, Bangla, Urdu and other regional and international languages.

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[nirjala]

Here potential energy on a ball will get completely converted to kinetic energy after a long time
So
For 1st ball, kinetic energy= q(potential due to all charges)

For second ball, kinetic energy=q(potential due to all charges-potential due to first ball)
Potential of first ball subtracted as it has already left the system

[adarshchaturvedi]

This is the best study channel ever seen ... Respect to u sir...

[itachu.]

you can use wet (altho sir done the same) to get equations

[birsajoharadivasi]

Thank you so much sir.. Advanced Illustrations book is so great that we just need to scan the QR once in questions we get stuck.

[priyamagrawal]

sir for b why potential is only v minus kqby e0 not kq upon distance from each charge

[vaibhavverma]

Here's a better alter:
By obsv: ∆KE=K=kqq/a for 1st and wnd ball as for 2nd ball all balls are contributing to energy except 1st (as it has left the system) from here result can be obtained by mere rearrangement of terms.
🙏

[SAHILTHEGAMER]

Sir wont the charge that has already been ejection apply force on the second q ??

[lakshyaporwal-jblt]

sir mainai yeh question work done is equal to diffrenece in kinetic energy se kiya h but usme denominator main n-1 arha hai
plzz help

[jagadeshkrishna]

Sir, how potential at A that is V..is used for finding...potential at B's location ...where u have used it! as it was the potential due to all charges?

[codingwithanonymous]

sir i could not solve or think of this.is it okay to see the solution if after trying not getting or read the thoery again and then anaklyse

[anikalpjaiswal]

what if it's not mentioned to refer adjacent charge to be released and any of the charge can release from this n-gon . what will be the solution?