試題詳解

16. The potential difference across the terminals of a battery is V₁when there is a current of I1 in the battery from the negative to the positive terminal. When the current is Iz in the reverse direction, the potential difference becomes V.. (Note that V₁, V₂, I₁ and I₂ are all defined as positive values)Which statement is not correct for this system?
(A) V₁ = V₂；
(B) The internal resistance of the battery is (V₂ - V₁)/( I₁ + I₂)；
(C) The enf of the battery is ( I₁V₂ +  I₂V₁ )/(I₁ + I₂)；
(D) All；
(E) None.