Rationality of Selecting Zero Point of Electric Potential in Complex Electrostatic Field Problem
When a complex electrostatic field problem is decomposed into two or even more sub-problems and the electric potential is solved by using the superposition principle,how to reasonably select the electric potential zero point of each sub-problem is studied and discussed.Firstly,the arbitrariness and relativity of the selection of electric potential reference point are discussed.Afterwards,the rationality of the selection of electric potential reference point is derived through a practical electrostatic field problem.Finally,the rationality is analyzed and discussed from energy and uniqueness theorem.
complex electrostatic field problemelectric potential zero pointwork and energyuniqueness theorem
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