Physics, 16.09.2021 14:00 yasminothman02
Dòng điện chạy qua đoạn mạch xoay chiều có dạng i = 2cos (100t +) A, điện áp giữa hai đầu đoạn mạch có giá trị hiệu dụng là 12V, và sớm pha so với dòng điện. Viết biểu thức điện áp giữa hai đầu đoạn mạch
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Dòng điện chạy qua đoạn mạch xoay chiều có dạng i = 2cos (100t +) A, điện áp giữa hai đầu đoạn mạch...
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