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9 Jan 2010 11:36:12 IST

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a charge Q is uniformly distributed on a plastic plate .the electric field at point p neat the cente

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a charge Q is uniformly distributed on a plastic plate .the electric field at point p neat the center of the plate is 10 v/m .if this plate is replaced by copper plate of same dimension and charge ,the electric field at the point p will become a) zero b)10 v/m c)20 v/m

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Black Gene

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9 Jan 2010 11:55:07 IST

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10 v/m , field will remain same !!!

Yagyadutt Mishra

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9 Jan 2010 11:58:59 IST

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Inside the conductor EF is zero.............for the case of plastic we have 10V/m...........but for conductor at the center inside it EF=0

Black Gene

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9 Jan 2010 12:02:47 IST

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Yagyadutt Mishra

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9 Jan 2010 12:06:02 IST

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you are right/.

Black Gene

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9 Jan 2010 12:08:13 IST

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sir , the net charge on the plate should be Q ??? isn't it ??

And u r making the total charge as zero !!!???

+q - q =0 ??

sneha rajendran

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9 Jan 2010 19:33:34 IST

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its abt a point outside the plate

sneha rajendran

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9 Jan 2010 19:37:48 IST

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copper is a conductor..whereas plastic is an insulator..so electric field near a charged conductor is sigma/epsilon..whereas for an insulatror it is sigma /2*epsilon

Black Gene

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9 Jan 2010 19:43:54 IST

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here sigma is also changing !!!!! so i think field will remain same ! 10v/m ! isn't it ??

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