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Physics, 17.12.2021 14:00 lilgunter12

Một dòng điện có cường độ I=10Achạytrongmộtdây dẫn rất dài, phần giữa có dạng một cung tròn bán kính R = 20 cm như hình vẽ. Biết góc  = 600. Hệ thống đặt trong không khí. Xác định hướng và độ lớn của vectơ cảm ứng từ tại tâm O của cung tròn.

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Một dòng điện có cường độ I=10Achạytrongmộtdây dẫn rất dài, phần giữa có dạng một cung tròn bán kính...

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