p235sp16+exam+1+form+1.pdf

# p235sp16+exam+1+form+1.pdf - Physics 235 Spring 2016 Exam 1...

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Physics 235 Spring 2016 Exam 1: May 17, 2016 Form 1 Note: Some questions are altered problems you may have seen before. Be sure to read the questions carefully. 1. An electric dipole is made of a positive charge q and a negative charge – q separated by a small distance l , oriented as shown in the picture. A negative point charge – Q is a distance r from the center of the dipole, such that all three charges lie on a line. The distance rl ± . Which is most nearly the magnitude and direction of the electric force on the charge –Q? Hint: You might identify the correct answer, without actually computing it, by eliminating incorrect answers. A. 2 2 kqQ lr to the left B.
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• Winter '08
• Mckay

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