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Physics, 26.10.2021 01:30 erieannapickett12

R1 = 14 R2 = 16 R3 = 20 đạt vào hai đầu AB hiệu điện thế U thì cường độ dòng điện trong mạch chính là 0,7A a) tính điện trở tương đương của mạch

b) tính hiệu điện thế ở hai đầu mỗi điện trở

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R1 = 14 R2 = 16 R3 = 20 đạt vào hai đầu AB hiệu điện thế U thì cường độ dòng điện trong mạch chính l...
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