40. 如圖所示電路,試求$\bar{I}$為何?
(A) 20$\sqrt{2}$∠-45°A
(B) 20∠-45°A
(C)10$\sqrt{2}$∠-45°A
(D)10∠-45°A
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統計: A(20), B(162), C(57), D(42), E(0) #3288004
統計: A(20), B(162), C(57), D(42), E(0) #3288004