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Electricity

Blazing goIITian

Joined:	21 Dec 2007
Post:	1025

2 Jun 2008 21:02:09 IST

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A hollow sphere of radius 2R is charged to V volts and another smaller sphere of radius R is charged to volt V/2 . Then the smaller is placed inside the bigger spher without changing the net charge on each sphere. the petential differenbce between the 2 spheres would be

a) 3V/2 b) V/4 c) V/2 d) V

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Anand Hegde

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Joined: 12 Jun 2007

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2 Jun 2008 21:59:44 IST

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i have answered here

http://iit-redefined.zzl.org/viewtopic.php?f=7&t=481&p=2716#p2716

ashish ranjan

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Joined: 14 Jan 2007

Posts: 351

2 Jun 2008 23:11:59 IST

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potential of outer spher is V+V/4(V/4 is due to the internal sphere on outer sphere) potential of inner sphere is V+V/2(V due to outer on inner) .

so the diff. is V/4(b)

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