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hanhan2019
2 năm trước
Cho 3 nguồn điện ghép nối tiếp: ξ1=8V; r1=1,2 ôm; ξ2=4V; r2=0,4 ôm; ξ3=3,6V; r3=0,7 ôm. Tính suất điện động và điện trở trong bộ nguồn.
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