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Question

square insulating sheet 87.0cm on a side is held horizontally. The sheet has 6.85nC of charge spread uniformly over its area.

Part A

Calculate the electric field at a point 0.490mm above the center of the sheet.

Explanation / Answer

Area of sheet=0.872=0.7569m3

distance from sheet ,r=0.00049m

Since r<<A

E=q/Ae0=6.85x10-9/0.7569 x 8.85x10-12=1022.6N/C

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