A.3Ω/5W B.3Ω/4W C.3Ω/3W D.2Ω/3W
如圖所示電路,則電流I=()
A.7.5A B.6.25A C.5A D.3.75A
如圖所示電路,求電流I=()
A.12A B.9A C.6A D.3A