2017 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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2017 AP Physics C Electricity&Magnetism Practice Exam Multiple Choices Free Download

2017 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：

6）A copper wire of length L and diameter D dissipates energy at a rate P₀ when the current in the wire is 10 A. A second copper wire of length L has diameter 2D. What current in the second wire would dissipate energy at a rate P₀ ?

1. 2.5 A
2. 5.0 A
3. 10 A
4. 20 A
5. 40 A

14）A beam of particles travels at a right angle to a uniform magnetic field. Particles can be separated into different trajectories based on which of the following properties?

1. The charge of the particle
2. The mass of the particle
3. The velocity of the particle

1. I only
2. III only
3. I and II only
4. I and III only
5. I, II and III

16）A resistor of resistance R is connected in a circuit to two identical batteries. The circuit also contains switch S and ideal voltmeter V, as shown in the figure above. The batteries both have an emf ε and internal resistance r. The reading of the voltmeter is noted with the switch in the open position. Which of the following best represents how the voltmeter reading after the switch is closed compares to the reading before the switch is closed?

1. The reading of the voltmeter is the same.
2. The reading of the voltmeter is higher.
3. The reading of the voltmeter is lower.
4. Cannot be determined without knowing the internal resistance of the batteries.
5. Cannot be determined without knowing the emf of the batteries.

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