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3 years ago

13

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 t

ại O.

1 answer:

kvv77 [185]3 years ago

7 0

H=I/2πr

H=20/(2*π*5)

H=0.6366

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