Question

two charges 7mc and -2mc are placed at (-9,0,0) and (9,0,0) respectively in an external electric field E=A/r^2 where A=9*10^5 cm^-2.What is potential energy of the system?​

Answer 1

Explanation:

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Answer 2

Hey, the answer is 49.3J. I have verified it. Here is a detailed solution. Hope this helps :)