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24 Mar 2010 17:25:28 IST

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four particles each having a charge q are placed on four vertices of a regular pentagon...the distan

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four particles each having a charge q are placed on four vertices of a regular pentagon...the distance of each corner from the center is a...find the electric field in the centre of the pentagon??

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Krishna Gopal Singh

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Joined: 29 Dec 2006

Posts: 5524

25 Mar 2010 02:23:38 IST

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If there was a fifth particle the net field woukd have been zero.So fileld in this case is equal to field of 1 partcle which iskq/r^2

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