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A charge Q is place at each of the oppos...

A charge Q is place at each of the opposite corners of a square. A charge q is placed at each of the other two corners. If the net electrical force on Q is zero, then `Q//q` equals:

A

`-2sqrt(2)`

B

`-1`

C

1

D

`-(1)/(sqrt(2))`

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The correct Answer is:
A
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