2010 AP Physics C物理C—Electricity and Magnetism電磁真題系列之簡答題免費下載

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2010 AP Physics C Electricity&Magnetism?Free-Response Questions Free Download

2010 AP 物理C電磁簡答題部分免費下載

此套題僅?p II含有簡答題，

共計時45分鐘，共3題

占總分50%

每道大題可能含有不同數量的小題

可以使用計算器

部分真題預覽：

1）A charge +Q is uniformly distributed over a quarter circle of radius R, as shown above. Points A, B, and C are located as shown, with A and C located symmetrically relative to the x-axis. Express all algebraic answers in terms of the given quantities and fundamental constants.

1. Rank the magnitude of the electric potential at points A, B, and C from greatest to least, with number 1 being greatest. If two points have the same potential, give them the same ranking.
   ____VA ____VB ____VC
   Justify your rankings.
   Point P is at the origin, as shown below, and is the center of curvature of the charge distribution.
2. Determine an expression for the electric potential at point P due to the charge Q.
3. A positive point charge q with mass m is placed at point P and released from rest. Derive an expression for the speed of the point charge when it is very far from the origin.
4. On the dot representing point P below, indicate the direction of the electric field at point P due to the charge Q.
5. Derive an expression for the magnitude of the electric field at point P.

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