2009 AP Physics C物理C—Electricity and Magnetism電磁真題系列之選擇題免費下載

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2009 AP Physics C Electricity&Magnetism?Multiple Choices?Free Download

2009 AP 物理C電磁選擇題部分免費下載

此套題僅?p II含有簡答題，

共計時45分鐘，共35題

占總分50%

可以使用計算器

僅可使用鉛筆

考試時會提供常用公式列表

部分真題預覽：

1）A positive point charge is initially at rest close to a bar magnet that is also at rest. The charge will

1. be attracted to the north pole of the magnet
2. be repelled by the north pole of the magnet
3. be attracted to the south pole of the magnet
4. be repelled by the south pole of the magnet
5. experience no magnetic force

Questions 11-12

A uniform magnetic field B directed downward parallel to the plane of the page exists in the shaded region shown above. An electron can enter the field from different directions.

11）Suppose that the electron is moving straight down in the same direction as B when it enters the region of the magnetic field. What is the direction of the magnetic force, if any, on the electron when it first enters the field region?

1. Toward the bottom of the page
2. Toward the top of the page
3. To the left
4. To the right
5. None; there is no magnetic force on the electron

12）Suppose that electron is moving perpendicularly into the plane of the page when it enters the region of the magnetic field. What is the direction of the magnetic force, if any, on the electron when it first enters the field region?

1. Toward the bottom of the page
2. Toward the top of the page
3. To the left
4. To the right
5. None; there is no magnetic force on the electron