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1 mu C charge is shifted from A to B and...

`1 mu C` charge is shifted from A to B and it is found that work done by external force is `80 mu J` against electrostic forces, find `V_(A)-V_(B)`

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`W_(AB)=q(V_(B)-V_(A))`
`80 mu J=1 mu C (V_(B)-V_(A))rArr V_(A)-V_(B)=-80 V`
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