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![[Post New]](/templates/default/images/icon_minipost_new.gif) 11 Apr 2008 04:42:42 IST
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i think rakesh is ryt.................points in d cavity are experiencin diffrent forces........... there will be electric field inside the cavity..............
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11 Apr 2008 05:12:30 IST
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I.E Irodov problem 3.28
hope it helps
![[Thumb - 23.JPG]](/../upload/2008/2/9/5ef72ad2a0891989b49c22f323683c3f_14106.JPG_thumb) I.E Irodov problem 3.28
hope it helps
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Siddhant Shah
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11 Apr 2008 21:59:59 IST
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@ rakesh well for an isulator the charge may or can reside on the surface... as the charge placed in an insulator doesnt move...if we place it on the surface it stays there.....but in case of conductor charge reside ONLY on the surface...well also position of the cavity doesnt play much role.....it doesnt matter whether it is at the centre of any other place,....also here the field is not zero bcause in case of insulator as the charges doesnt flow.....there can exist electric field...in electrostatic condition....well @ arpan is perfectly rite...hope u got it....rate if satisfied...
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11 Apr 2008 22:02:37 IST
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well it would be better if u change ur discussion towards the concept of Gauss law
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11 Apr 2008 22:04:47 IST
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i didnt get u sorry????
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The only place where you will find success before hard work is in the dictionary
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11 Apr 2008 22:21:56 IST
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idea is that the electic field is a constant within a uniformly charged sphere,hence by the super position principle,u can prove the following..
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11 Apr 2008 22:25:03 IST
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chk my expl in the above posts....
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11 Apr 2008 22:25:13 IST
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the sphere is an insulator because charge is uniformly distributed in in its volume and in conductor charge resides only on surface
isse aage nahi aaata HELPPPPPPPPPPPPPPPPP
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11 Apr 2008 22:31:51 IST
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ya ya now i too got it well in an insulator charge is didtributed on surface as well as in its volume too it is also mentioned volume in the qns now that makes sense thanks i am wrong sorry if i offended any body
sorry for my mistake
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12 Apr 2008 06:26:06 IST
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arey yaa....................got it nw........thank u jain !
hw cud i make such a fault ! !
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12 Apr 2008 10:09:49 IST
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he says it is a charged sphere and says dat charge does xist and distributed uniformly, so , I guess arpan is right and ans sure is B),
yet it did not sink in properly if somone cud help a bit more I wud be good
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>>sugeet->
--catalysingsuccess |
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12 Apr 2008 10:11:32 IST
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reply soon
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>>sugeet->
--catalysingsuccess |
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16 Apr 2008 20:59:57 IST
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The body is made of 2 spheres one larger than the other. The larger one having charge density 'a' and the smaller one having charge density '-b'. magnitude of a = magnitude of b Therefore net field at a point inside the smaller sphere is due to large sphere and small sphere. Electric field due to large sphere is a.x vector ----------------------- 3 epsilon nought electric field due to smaller sphere is b.x' vector --------------------- 3 epsilon nought now x vector = x' vector + y vector (vector joining centres of 2 spheres) therefore we get a constant term a + b (y vector) ------------------------- 3 epsilon nought therefore it is constant and non zero. Edit: OOps I did not realise that the thread had a second page and that the problem has been solved. Well nevermind.
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16 Apr 2008 22:03:31 IST
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can u tell me the question paper I or II and the number of this question please??
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16 Apr 2008 22:05:34 IST
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