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ninhbg123
2 năm trước
Cho đoạn mạch như hình vẽ,trong đó điện trổ R1=15 điện trở,R2=10 điện trở,Ampe kế A2 chỉ 0.6 A a)Tính hiệu điện thế giữa hai đầu AB của đoạn mạch b) tính số chỉ Ampe kế A
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