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Electric charges of `+10µc, 5µc, –3µc and 8µc` are placed at the corners of a square of side `sqrt2`m the potential at the centre of the square is ......
Options:
(a) 1.8 V (b) `1.8 ×10^5 V` (c) `1.8 ×10^6 V` (d) `1.8 ×10^4 V`

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