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ABCD is a square of side 4 cm. Charges o...

ABCD is a square of side 4 cm. Charges of `16xx10^(-9) C, -16xx10^(-9) C` and `32xx10^(-9)C` are placed at the points A, C and D, respectively. Determine the electric field at point B.

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The correct Answer is:
`9sqrt3xx 10 ^(4) NC^(-1)`," inclined at an angle of"`9^(@) 44 ` "with AB produced"
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