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Physics, 30.10.2021 14:00 mathbrain58
Để làm một biến trở có điện trở lớn nhất là 20Ω bằng dây dẫn nikêlin có điện trở suất là 0,40.10-⁶Ω.m và tiết diện 0,5mm². Tính chiều dài của dây dẫn
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Để làm một biến trở có điện trở lớn nhất là 20Ω bằng dây dẫn nikêlin có điện trở suất là 0,40.10-⁶Ω....
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