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Duypham
2 năm trước
.Cho một hiệu điện thế U = 40V và hai điện trở R1, R2. Nếu mắc nối tiếp hai điện trở này vào hiệu điện thế U thì dòng điện đi qua chúng có cường độ I1 =2A; nếu mắc song song hai điện trở này vào hiệu điện thế U thì dòng điện mạch chính có cường độ I2 = 32/3 A. Tính R1, R2?
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