2013 AP Physics C物理C—Electricity and Magnetism电磁真题系列之Practice Exam简答题免费下载
历年AP Physics物理学系列
真题与答案下载
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2013 AP Physics C Electricity&Magnetism Practice Exam Free-Response Questions Free Download
2013 AP 物理C电磁模考简答题部分免费下载
此套题仅 p II含有简答题，
共计时45分钟，共3题
占总分50%
每道大题可能含有不同数量的小题
可以使用计算器
部分真题预览：
1）Students are given the circuit above in their lab, but they do not know the values of the two resistances RA and RB. The battery has a terminal voltage of 24 V and the inductor has an inductance of 0.05 H. Assume the internal resistance of both the battery and the inductor to be negligible. The switch S is closed at time t = 0.
In order to determine the values of the resistances RA and RB, the students measure the current as a function of time through the resistance RA. The graph of their results is below.
On the circuit diagram above, insert an ammeter to measure the current through RA.
Use the data taken by the students to calculate the value of RA.
Use the data taken by the students to calculate the value of RB.
Calculate the initial rate of change of current in the inductor.
In reality, both the battery and the inductor have nonnegligible internal resistance. Would the true value of RA be greater than or less than the value you obtained in part (b)?
_______Greater than_______Less than
Justify your answer.
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