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huynhducdepz
2 năm trước
cường độ dòng điện chạy qua động mạch gồm 2 điện trở ở R1=6 ôm, R2=12 ôm. mức song song giữa hai điểm A,B là 0,5 ampe. tính hiệu điện thế giữa điểm. A, B và qua các điểm trở
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