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Physics, 17.10.2021 15:00 kedjenpierrelouis

Một biến trở ghi ( 200 ôm - 5A ) a) Giải thích ý nghĩa số ghi trên biến trở
b)Tính chiều dài của dây làm biến trở . Biết dây được làm bằng đồng , có đường kính tiết diện 0.2 mm.
c) Tính hiệu điện thế lớn nhất có thể đặt vào 2 đầu của biến trở

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Một biến trở ghi ( 200 ôm - 5A ) a) Giải thích ý nghĩa số ghi trên biến trở
b)Tính chiều dài...

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