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Calculate the work required to bring a u...

Calculate the work required to bring a unit positive charge from infinity to a mid-point between two charges `20muC" and " 10muC` separated by a distance of 50 m.

A

`10.8xx10^(4)J`

B

`10.8xx10^(3)J

C

`10.8xx10^(8)J

D

`0.54xx10^(5)J

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