Cho mạch điện như hình vẽ:
Biết: R1 = 15, R2 = R3 = R4 = 20; RA = 0; ampe kế chỉ 2A.
Tính...
Physics, 15.06.2021 06:20 preservations
Cho mạch điện như hình vẽ:
Biết: R1 = 15, R2 = R3 = R4 = 20; RA = 0; ampe kế chỉ 2A.
Tính cường độ dòng điện qua các điện trở R1, R2, R3, R4.
Answers: 3
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