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Unformatted text preview: fierro (jmf2547) – HW 03 – berk – (60290) 1 This printout should have 14 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points The diagram shows an isolated, positive charge Q , where point B is twice as far away from Q as point A . + Q A B 10 cm 20 cm The ratio of the electric field strength at point A to the electric field strength at point B is 1. E A E B = 2 1 . 2. E A E B = 1 2 . 3. E A E B = 1 1 . 4. E A E B = 4 1 . 5. E A E B = 8 1 . 002 (part 1 of 2) 10.0 points A charge Q is distributed uniformly along the x axis from x 1 to x 2 . The Coulomb constant is 8 . 98755 × 10 9 N · m 2 / C 2 Which of the following integrals is correct for the magnitude of the electric field at x on the x axis? Assume that x > x 2 > x 1 and k e = 1 4 πǫ . 1. integraldisplay x 2 x 1 k e Q ( x 2 x 1 )( x x ) 2 dx 2. None of these 3. integraldisplay x 2 x 1 k e Q ( x 2 x ) x 2 dx 4. integraldisplay x 2 x 1 k e Q ( x 2 x 1 ) x 2 dx 5. integraldisplay x 2 x 1 k e Q ( x 2 x )( x x ) 2 dx 003 (part 2 of 2) 10.0 points If x 1 = 0 m, x 2 = 5 . 88 m and the charge Q = 2 . 67 μ C, what is the magnitude E of the electric field at...
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This note was uploaded on 09/19/2008 for the course PHY 303L taught by Professor Turner during the Spring '08 term at University of Texas.
 Spring '08
 Turner
 Charge

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