問題詳情
13．在“测定电源电动势和内阻”的实验中，某同学根据实验数据，做出了正确的U－t图像，如图4所示，其中图线斜率绝对值的物理含义是
(A)短路电流
(B)电源内阻
(C)电源电动势
(D)全电路电阻
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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