2015 AP Physics C物理C—Electricity and Magnetism电磁真题系列之Practice Exam选择题免费下载

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2015 AP Physics C Electricity&Magnetism Practice Exam Multiple Choices Free Download

2015 AP 物理C电磁模考选择题部分免费下载

此套题仅 p II含有简答题，

共计时45分钟，共35题

占总分50%

可以使用计算器

仅可使用铅笔

考试时会提供常用公式列表

部分真题预览：

10）A spherical conductor is on an insulating stand, as shown in the figure above. A negatively charged rod is brought close to the sphere but does not touch the sphere. Which of the following describes the resulting charge on the sphere?

1. Positive
2. Negative
3. No net charge, but the sphere is polarized with positive charge on the left side.
4. No net charge, but the sphere is polarized with negative charge on the left side.
5. No net charge and no polarization

14）If a dielectric is inserted between the plates of a capacitor while the capacitor maintains its connection to a constant voltage source, which of the following is true?

1. The capacitance of the capacitor is unchanged.
2. The charge on the capacitor plates increases.
3. The potential difference across the capacitor increases.
4. The electric field between the capacitor plates increases.
5. The electric field between the capacitor plates decreases.

16）The graph above shows the electric field E as a function of x, where x is the distance from a given charge arrangement in an xyz-coordinate system. Which of the following could be the arrangement?

1. A positive point charge at x = 0
2. Positive charges uniformly distributed inside a sphere with x = 0 on the sphere’s surface
3. Positive charges uniformly distributed on the surface of a sphere with x = 0 on the sphere’s surface
4. Positive charges uniformly distributed along the y-axis
5. Positive charges uniformly distributed over the yz-plane

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