42. Two batteries of different emfs and different internal resistances are connected. The voltage across AB in volt is

(A) 1
(B) 2
(C)
(D)
(E) 5
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統計: A(4), B(2), C(2), D(0), E(9) #3081282
統計: A(4), B(2), C(2), D(0), E(9) #3081282