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Four point charges q(A) = 2mu C, q(B)= -...

Four point charges `q_(A) = 2mu C, q_(B)= -5mu C q_(C )= 2mu C and q_(D) = -5muC` are located at the corners of a square ABCD of side 10cm. What is the force on the charge of `1mu C` placed at the centre of the square.

A

zero

B

`2.545 xx 10^(9) N`

C

`15.91 xx 10^(9)N`

D

`12.72 xx 10^(9)N`

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