nguyenlanhav77 nguyenlanhav77
  • 19-06-2021
  • Physics
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Dòng điện I = 20 A chạy qua đoạn dây dẫn có dạng như hình vẽ. Biết bán kính của cung tròn là R = 5 cm. Tính cường độ từ trường tại O.

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AlexTrusk
AlexTrusk AlexTrusk
  • 19-06-2021

H=I/2πr

H=20/(2*π*5)

H=0.6366

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