Practice_Exam_1

# Practice_Exam_1 - PHYS2002 Section 1 Spring 2008 Practice...

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PHYS2002 – Section 1 – Spring 2008 Practice Exam 1 (Ch. 18 – 20) Constants Name:_________________ 2 2 2 9 2 2 12 o 19 19 31 27 m/s 8 . 9 C / m N 10 99 . 8 m N / C 10 85 . 8 C 10 602 . 1 C 10 602 . 1 kg 10 11 . 9 kg 10 67 . 1 = × = × = × = × + = × = × = g k q q m m e p e p ε

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paper is uncharged. Which of the following best explains why? A) The electric field inside the paper is zero. B) The electric force is always attractive. C) The paper becomes polarized. D) Rubber and paper always attract each other. E) None of these. 2. Four point charges are arranged as in the figure below with their magnitudes and signs given. Which arrow shows the direction of the net force on Q 4 ? The distances between the charges are drawn to scale. A) A B) B C) C D) D E) None of these. 3. A negatively charged particle moving at constant speed from right to left enters a region of space where a uniform electric field exists (see figure). Once the particle enters the field, it slows, momentarily stops, and then moves back out of the field from left to right along the same initial path. What is the direction of the electric field? A) Up B) Down C) Right D) Left E) Into the page. 4. Refer to problem 3. Which region of the field is at a higher potential? A) Top B) Left C) Right D) Bottom E) The potential is the same everywhere. B
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## This note was uploaded on 04/24/2010 for the course PHYS 2002 taught by Professor Blackmon during the Spring '08 term at LSU.

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Practice_Exam_1 - PHYS2002 Section 1 Spring 2008 Practice...

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