Asked by chandant | 1st Oct, 2010, 04:21: PM

Expert Answer:

Dear Student
Distance of positive charge from point of observation= z-a 
Distance of negative charge from point of observation= z+a
hence potential= 
You may check that answer is dimensionally correct as gives you dimension of length inverse .
We hope your doubt is clarified.

Answered by  | 3rd Oct, 2010, 05:52: AM

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