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lamvanluonghoa
2 năm trước
Phát biểu nào sai: A. Lực từ tác dụng lên phần tử mang dòng điện tỉ lệ vs cám ứng từ B. Lực từ tác dụng lên phần tử mang dòng điện tỉvleej vs cường độ dòng điện C. Lực từ tâc dụng lên phần tử mang điện vuông góc vs phân tử mang điện D. Lực từ tác dụng lên phân tử mang điện cùng hướng vs từ trường
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