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lehoanganh15081999
2 năm trước
Một khung dây hình tròn diện tích 10cm vuông, gồm 20 vòng dây. Khung dây đặt trong từ trường đều, vecto cảm ứng từ vuông góc với mặt phẳng; B=0.03T b) Quay khung 180 độ chung quanh 1 trong các đường kính của khung. Tính độ biến thiên từ thông qua khung. giúp mình với mng ưi!!!
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