Cho đoạn mạch xoay chiều như hình vẽ . Mắc vào hai...
Câu hỏi: Cho đoạn mạch xoay chiều như hình vẽ . Mắc vào hai đầu AB một điện áp xoay chiều u=120
cos 100πt (V) thì vôn kế V1=120 V và điện áp u1 vuông pha với uAB. Hệ số công suất của mạch là :![](data:image/jpeg;base64,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)
A /2
B /2
C 1
D 1/2
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT Quốc Gia - Môn Vật Lý trường THPT Chuyên Quốc Học Huế lần 2 năm 2015- Mã đề 151