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A cubic box D= 20cm in side is exposed to electric field E= 2.0x10 4 N/C. The out coming electric field on the opposite face

A cubic box D= 20cm in side is exposed to electric field E= 2.0x104 N/C. The out coming electric field on the opposite face is E=-3.0x104 N/C. E Determine the charge (in nC) inside the cube?

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