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Electricity

Scorching goIITian

Joined:	28 Feb 2007
Post:	287

13 Mar 2008 23:00:28 IST

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510

a matrix type question on capacitor...

None

plz tell me how to solve this...

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Comments (3)

sarthak

Cool goIITian

Joined: 11 Mar 2008

Posts: 69

14 Mar 2008 20:23:38 IST

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is it a)q b)r c)p d)s?

arpit

Hot goIITian

Joined: 17 Feb 2008

Posts: 112

16 Mar 2008 08:57:37 IST

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ya I too didn't get this qs when I solved fiitjee ft-7........although,without solving,I marked the ans as given by sarthak but it turned out to b wrong.......plz if any1 cud solve it......

NITESH BASKARAN

Blazing goIITian

Joined: 29 Sep 2007

Posts: 487

16 Mar 2008 15:53:21 IST

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the three plates here are treated as two capacitors in parallel
plate 2 and plate 5 are maintained at the same potential
as they are connected to the same side of the battery
hence
D - s
and
C - p

also the capacitance of first capacitor is eA/2d
charge induced in plate three = eA/2d*(V)
as it is a part of the first capacitor
hence
A-q
and similarly
B-r

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