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![[Post New]](/templates/default/images/icon_minipost_new.gif) 19 Jun 2008 09:34:13 IST
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IN PARALLEL PLATE CAPACITORS CAN A SYSTEM OF TWO PARALLEL PLATES OF EQUAL AREA , SAME CHARGE DENSITIES HAVE CAPACITANCE ??
|+ +| E inside = 0
|+ +| dv/dr = 0
|+ +| v= constant
|+ +| hence potential is nonzero
|+ +| so c =q/v which is a finite value ????
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19 Jun 2008 12:43:01 IST
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i think itis not a capacitor,,,
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if i helped u plzzzzz rate me,,,,,,, |
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19 Jun 2008 12:43:46 IST
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ya its not a capacitor..thr shud be negative charge at da other end
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19 Jun 2008 12:49:04 IST
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yep its not a capacitor at all ...capacitance can exist if same charge density is there for opp charged particles
u can hav capcitance for a isolated conductor considering the other object(plate) to b at infinity.....
a capacitor is one with opp cahrged plates only!!! even when u construct a capacitor
assume u have a positively charged plate first then an insulated one this plate induces a negative charge on teh insulated one...so positve charges got to the opp side of the insulated plate then they r earthed!
so u hav got opp cahrged plaates which form the capacitor....and u cannot hav two lik charged plates!
rate if this is not bad....:)
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sathya prabha girish |
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19 Jun 2008 12:49:54 IST
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what i read in many books is that opposite and equal charges are taken to decrease the field thats all a single conductor has capacitance . now the book doesnt mention if like charged cap. can have capacitance
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COPYRIGHT :
The copyright for the facts written above is held by x4
no part of the facts may be reproduced , stored in ur memory , or transmitted by any means without pror written permission from x4
****VIOLATERS ARE LIABLE FOR PROSECUTION UNDER THE " X4 GOIIT ACT 2008 ".**** |
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19 Jun 2008 12:57:06 IST
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@x4
SEE, THIS SYSTEM COULD NOT BE CALLED A CAPACITOR. BECAUSE FIRST OF ALL THE CHARGE IS ONLY GIVEN TO ONE PLATE AND AT THE SECOND PLATE THE CHARGE IS INDUCED WHICH CAN NEVER BE LIKE CHARGE. NOW IF U WANT A SYSTM LIKE THIS U HAVE TO CHARGE BOTH THE PLATES SIMULTANEOUSLY THEREFORE THIS IS LIKE CHARGING TWO DIFFERENT CONDDUCTORS SIMULTANEOUSLY.
NOW AS FAR AS UR DERIVATION GOES ON, U MUST FIRST OF ALL KEEP IN CONSIDERATION THE FACT OF USING THE FORMULA
C = Q/V
IN THIS V IS NOT THE POTENTIAL DIFFERENCE BUT THE ABSOLUTE POTENTIAL OF THE CONDUCTOR. NOW KEEPING THIS FACT IN MIND U CAN SEE THT DUE TO THE PRESENCE OF OTHER SIMILARLY CHARGED PLATE THE POTENTIAL AT FIRST PLATE IS ACTUALLY INCREASED SINCE POTENTIAL IS A SCALER QUANTITY AND THEREFORE ALGEBRAIC SUM WILL BE DONE. THEREFORE DUE TO INCREASE IN POTENTIAL THE ACTUAL CAPCITY IS DECREASED NOT INCREASED.
I THINK THIS GOES RIGHT.
PLZ... RATE IF SATISFIED................
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19 Jun 2008 14:32:21 IST
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look its not necessary that the charges on the opposite plate is by the process of induction u can allways have a system like this what u say is right , that u have to charge both plates , given this system can it have a finite value of capacitance ???
u say it wud decrease , agreed , but does it have capacitance ???????
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COPYRIGHT :
The copyright for the facts written above is held by x4
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****VIOLATERS ARE LIABLE FOR PROSECUTION UNDER THE " X4 GOIIT ACT 2008 ".**** |
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19 Jun 2008 14:46:32 IST
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sure. this systeem has a finite capacitance but its capacitance is less than tht of a single plate.
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19 Jun 2008 17:29:40 IST
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Simply its not a capacitor
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19 Jun 2008 20:50:19 IST
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ITS ACTUALLY A RELATED QN. I WANT TO DISSAPROVE THIS IS A PART OF IT WANT THAT QN. POST UR EMAIL ID'S COZ I CAN UPLOAD ANY IMAGES IN THIS SITE FROM MY COMP DONNO WHY ???/
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COPYRIGHT :
The copyright for the facts written above is held by x4
no part of the facts may be reproduced , stored in ur memory , or transmitted by any means without pror written permission from x4
****VIOLATERS ARE LIABLE FOR PROSECUTION UNDER THE " X4 GOIIT ACT 2008 ".**** |
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19 Jun 2008 20:54:36 IST
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not a capacitor
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I DONOT FOLLOW THE RULES I MAKE THEM TO FOLLOW ME. |
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19 Jun 2008 20:55:45 IST
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PLEASE DISSAPROVE ME OR GIVE A REASON . THANKYOU
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COPYRIGHT :
The copyright for the facts written above is held by x4
no part of the facts may be reproduced , stored in ur memory , or transmitted by any means without pror written permission from x4
****VIOLATERS ARE LIABLE FOR PROSECUTION UNDER THE " X4 GOIIT ACT 2008 ".**** |
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19 Jun 2008 20:56:17 IST
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the charges on faces should be equal and opposite..
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I DONOT FOLLOW THE RULES I MAKE THEM TO FOLLOW ME. |
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