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Electric charges of +10 muC,+5 muC,-3 mu...

Electric charges of `+10 muC,+5 muC,-3 muC and +8 muC` are placed at the corners of a square of side `sqrt(2)` m, the potential at the centre of the square is

A

1.8 V

B

`1.8xx10^(6)`V

C

`1.8xx10^(5)` V

D

`1.8xx10^(4)V`

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