2017 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

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2017 AP Physics C Electricity&Magnetism Practice Exam Free-Response Questions Free Download

2017 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）The electric potential in a region of space as a function of position x is given by the equation V(x) = ax² + βx - γ, where a= 2 V/m² , β= 7V/m, and γ = 15V . All nonelectrical forces are
negligible.

1. An electron starts at rest at x = 0 and travels to x = 20 m.
   1. Calculate the magnitude of the work done on the electron by the electric field during this process.
   2. Calculate the speed of the electron at x = 20 m.
2. Derive an equation for the x-component of the electric field as a function of position x.
3. 1. On the axes below, sketch a graph of the acceleration of the electron a as a function of position x.
   2. On the axes below, sketch a graph of the kinetic energy of the electron K as a function of position x.
4. At which of the following locations will an electron that is released from rest move in the negative x direction? Check all that apply.
   _____x = –2 m _____ x = +1 m ______x = +3 m
   Justify your answer.
5. A charged object, generating its own electric field given by E( x) = 7 V/m, is introduced in the region. What is the potential difference from x = 0m to x = 20m caused by the combination of the original electrical potential and the electric field of the charged object?