Physics, 16.06.2021 16:00 roseemariehunter12

cho dòng điện i = 10A chạy qua dẫn thẳng dài , đoạn giữa được uốn thành vòng tròn bán kính 2,0 cm, đặt trong vòng bán kính 2,0 , đặt trong không khí như hình 6,0. cảm ứng từ tại tâm của vòng tròn là bao nhiêu ?

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cho dòng điện i = 10A chạy qua dẫn thẳng dài , đoạn giữa được uốn thành vòng tròn bán kính 2,0 cm, đ...

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