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A charge Q is placed at each of two oppo...

A charge Q is placed at each of two opposite comers • of a square. A charge q is. placed at each of the other two comers. If the net electric force on Q is zero, then Q/q equals to:

A

`-1`

B

1

C

`-1/sqrt2`

D

`-2sqrt2`

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The correct Answer is:
D
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