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If an extermal electric field (E) is app...

If an extermal electric field (E) is applied on the system, write the expression for the total energy of this system.

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If an external electric field E is applied on the system then the total energy of the system will be
`U = q_(1)V_(A)+q_(2)V_(B) +(1)/(4piin_(0)).(q_(1)q_(2))/(r_(12))`
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