如圖所示,電壓v0=()
A.14.4 B.24.4 C.34.4 D.44.4V
如圖所示電路,當(dāng)開關(guān)S閉合后,電流I應(yīng)為()
A.10A B.8A C.5A D.0A
如圖所示電路,則電流I=()
A.3A B.5A C.7A D.10A