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phongsaitama
2 năm trước
mắc hai điện trở R1 và R2 vào hiệu điện thế U=6V. khi chúng mắc nối tiếp nhau thì cường độ dòng điện là 0.24A .Khi song song thì cường độ tổng dòng điện là 1A. tính R1 và R2
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