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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Dec 2007 11:46:27 IST
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It is no where related to magnetics. Probably u have not understood my question. A charge distribution may produce uniform electric field or an varying electric field. In case field how to find the self potential energy of the body producing varying electric field???
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The heights by the great men reached and kept were not attained by a sudden flight ,but they while their companions slept were toiling upwards in the night. |
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6 Dec 2007 12:29:24 IST
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ans????
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Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.
Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
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6 Dec 2007 13:12:59 IST
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I think I got it!!!! Suppose u is the energy density, then u = ½ E0 E2. And also according to gauss theorem, if r is the distance from the centre, then electric field at a distance r is E= 1/4piE0 (q/r2) Energy store in dr thickness is dU=1/2 E0 E2 (4pi r2 dr) we will put the value of E. dU = ½ E0 [1/4piE0 (q/r2)] ((4pi r2 dr) dU= (q2/ 16piE0 ). (2pi dr) dU= q2 dr/r2 if u integrate this U= q2/ 8piE0 [ ] [ ] dr/r2 {note from R to infinity) { R is radius} U= q2 / 8pi E0 R Phew!!! Hope dis is the ans!!!
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Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.
Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
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6 Dec 2007 13:20:24 IST
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I think bond is right .He has given the concept in general for both varying electric and magnetic field , but ashgirl has explained it clearly !
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If you help others , others will help you . |
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6 Dec 2007 22:38:07 IST
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Don't have any idea about that?
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The heights by the great men reached and kept were not attained by a sudden flight ,but they while their companions slept were toiling upwards in the night. |
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6 Dec 2007 22:45:29 IST
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It's right.Excellent ash....absolutely fantastic.I liked it.
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The heights by the great men reached and kept were not attained by a sudden flight ,but they while their companions slept were toiling upwards in the night. |
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7 Dec 2007 10:22:56 IST
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thank u!! 
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Remember Cedric. Remember, if the time should come when you have to make a choice between what is right and what is easy, remember what happened to a boy who was good, and kind, and brave, because he strayed across the path of Lord Voldemort. Remember Cedric Diggory.
Albus Dumbledore
Goblet of Fire, Chapter 37, Page 724
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