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Physics, 10.11.2021 22:40 shmote12

Câu 7: Một mạch điện xoay chiều có nguồn điện áp u(t) = 200 sin100 t, phụ tải gồm 3 điện trở R1 = 20 , R2 = 45 , R3 = 35 ghép nối tiếp nhau. Tính điện áp hiệu dụng trên từng điện trở? A. U1 = 90V, U2 = 40V, U3 = 70V
B. U1 = 45V, U2 = 20V, U3 = 35V
C. U1 = 40V, U2 = 90V, U3 = 70V
D. U1 = 30V, U2 = 50V, U3 = 20V

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Câu 7: Một mạch điện xoay chiều có nguồn điện áp u(t) = 200 sin100 t, phụ tải gồm 3 điện trở R1 = 20...

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