A.50sin(wt - 90°)A B.2sin(wt+120°)A C.

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问题 A.50sin(wt - 90°)AB.2sin(wt+120°)AC.50sin(wt+90°)AD.2sin(wt - 120°)A

选项 A.50sin(wt - 90°)A
B.2sin(wt+120°)A
C.50sin(wt+90°)A
D.2sin(wt - 120°)A

答案 B

解析 纯电容是两端电压滞后流过的电流90°
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