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Physics, 16.06.2021 17:40 chase1869

Một dây dẫn mảnh được uốn thành một cung tròn bán kính 10cm, góc ở tâm bằng 120 độ. đặt trong không khí, trong dây dẫn có dòng điện cường độ 30A chạy qua. Độ lớn của cảm ứng từ tại tâm của cung tròn là bao nhiêu?

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Một dây dẫn mảnh được uốn thành một cung tròn bán kính 10cm, góc ở tâm bằng 120 độ. đặt trong không...
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