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If there is more than one source charge, each source charge contributes to the electric field at every point in the vicinity of the source charges. The electric field at a point in space in the vicinity of the source charges is the vector sum of the electric field at that point due to each source charge. For instance, suppose the set of source charges consists of two charged particles. The electric field at some point P will be the electric field vector at point P due to the first charged particle plus the electric field vector at point P due to the second particle. The determination of the total electric field at point P is a vector addition problem because the two electric field vectors contributing to it are, as the name implies, vectors.

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• 1 0 年前
最佳解答

如果有超過一來源充電, 各來源充電對電場貢獻在每點在來源充電的附近。電場在點在空間在來源充電的附近那時是電場的傳染媒介總和由於各來源充電。例如, 假設套來源充電包括二個荷電粒子。電場P 將是電場傳染媒介在點P 由於第一荷電粒子加上電場傳染媒介在點P 由於第二個微粒。總電場的決心在點P 是傳染媒介加法問題因為二電場傳染媒介貢獻對它是, 因為名字暗示, 傳染媒介。

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