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The potential energy of system of two eq...

The potential energy of system of two equal negative point charges of` 2 mu C` each held lm apart in air is ...............
`( k = 9 xx 10^9 ` SI unit )

A

`3.6 xx 10^(-3) J`

B

`3.6 xx 10^(-2) J`

C

`36 J`

D

`3.6 J`

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