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Electromagnetism

I am having trouble in certain questions which involve the concept of earthing and potential among plates ! can you plz help by suggesting any methods about that? and 2nd ques, when we overflow a bottle we see the surface is not plane but curved ! what is the radius of that curve ? 3rd one there is a frustum of cone (which is formed by cutting half of a cone ) and one charge \(q\) is placed at the peak of original cone what is their force of interaction? I got \(\theta \frac { \sigma q\quad ln(2) }{ 2\pi { \E }_{ 0 } } \) where \(\theta\) is the half angle and \(\sigma\) is the charge density on the frustum. Am I right?

Note by Brilliant Member
10 months, 2 weeks ago

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What is the last one? Dimensions of the frustum?

Kishore S Shenoy - 10 months, 2 weeks ago

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l/2 sl'nt height , R r'dius 'nd sigm' is ch'rge density of the frustum .

Brilliant Member - 10 months, 2 weeks ago

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got nything yet ? @Kishore S Shenoy

Brilliant Member - 10 months, 2 weeks ago

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What is \(\ell\)?

Kishore S Shenoy - 10 months, 2 weeks ago

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@Kishore S Shenoy it is just to s'y its v'lue is not going to 'ffect 'nswer 'nd it w's not even given in the question our interest lies only in the f'ct th't the cone is cut ex'ctly in h'lf

Brilliant Member - 10 months, 2 weeks ago

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@Brilliant Member Ohh, half. But still, I am getting in terms of \(r_1\) and \(r_2\)

Kishore S Shenoy - 10 months, 2 weeks ago

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@Kishore S Shenoy m'y be you c'n you the h'lf 'ngle give in the question

Brilliant Member - 10 months, 2 weeks ago

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you were s'ying something bro @Kishore S Shenoy

Brilliant Member - 10 months, 2 weeks ago

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First one, can you show me the question

Second one, check this out

Third one, I am lazy enough to even try!

Kishore S Shenoy - 10 months, 2 weeks ago

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no problem , you 'tle'st replied i'm h'ppy 'bout th't :)

Brilliant Member - 10 months, 2 weeks ago

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'nd th'nks for the second one :) it worked i 'm going to post 'n origin'l problem on it :)

Brilliant Member - 10 months, 2 weeks ago

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nobody helping me ? @Mark Hennings

Brilliant Member - 10 months, 2 weeks ago

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also help bro @Prakhar Bindal

Brilliant Member - 10 months, 2 weeks ago

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plz help sir @Mark Hennings @Josh Silverman

Brilliant Member - 10 months, 2 weeks ago

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