Physics
Undergraduate
求め方を教えてください…🙇♀️
(2) 1辺がaの正方形の頂点に, A, B, C, D にそれぞれq, -2q, 2q, -q の点電荷を置いたとき,正方形の
中心における電場 (図1)を求めなさい。
-9
図 1
-2q
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