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Physics, 14.12.2021 14:00 briannasj6164
cho dây dẫn thẳng dài vô hạn trong không khí song song với nhau có dòng điện chạy cùng chiều và trị số bằng nhau khoảng cách giữa 2 dây dẫn là d hãy xác định cường độ dòng điện chạy qua dây dẫn biết rằng khi dịch chuyển để hai dây dẫn cách nhau 1 khoảng 2d thì công tốn trên một đơn vị dài của dây dẫn là 5,54.10
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