31. 如【圖 5】所示電路,若 v(t)=100sin(377t+15°)V,i (t)=10sin(377t45°)A,則電感器所消耗的 虛功率為何?
(A) 125VAR
(B) 217VAR
(C)354VAR
(D) 433VAR

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統計: A(1), B(0), C(0), D(0), E(0) #4004889