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Physics, 24.07.2021 01:00 syrai7404

Một ống dây có độ dài 120 cm, cường độ dòng điện (I) chạy qua mỗi vòng dây là 2A. Cảm ứng từ bên ở trong ống dây có độ lớn B = 20π. T. Vậy tổng số vòng dây của ống dây là:

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Một ống dây có độ dài 120 cm, cường độ dòng điện (I) chạy qua mỗi vòng dây là 2A. Cảm ứng từ bên ở t...
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