first situation: charge 'q' is placed (at point A)near a charge 'Q' at a distance of 'p' centimeters.second situation: charge '2q' is placed(at point B)near charge 'Q' at distance of '2p' centimetrs.i)in which situation the potential energy of the system the greatest?ii)at what point (among A and B) theelectric potential the greatest?plzzzzzzzzzzz........ explain...........

Dear student,

Potential energy is given as

1/4pie. e(q1q2/r^2)

when charge is doubled, PE will also be doubled...

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