solutio456n6_pdf - kinsey (cbk323) oldhomework 04 Turner...

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Unformatted text preview: kinsey (cbk323) oldhomework 04 Turner (56725) 1 This print-out should have 8 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points The diagrams below depict three electric field patterns. Some of these patterns are physi- cally impossible. Assume these electric field patterns are due to static electric charges outside the regions shown. (a) (b) (c) Which electrostatic field patterns are phys- ically possible? 1. (a) and (b) 2. (c) only 3. (a) only 4. (b) and (c) 5. (b) only correct 6. (a) and (c) Explanation: Electrostatic lines of force do not intersect one another. Neither do they form a closed circuit (unless there is a changing magnetic field present). 002 (part 1 of 2) 10.0 points The figure below shows the electric field lines for two point charges separated by a small distance. q 1 q 2 What are the signs of q 1 and q 2 ? 1. q 1 < 0 and q 2 > 2. q 1 > 0 and q 2 < correct 3. q 1 < 0 and q 2 < 4. q 1 > 0 and q 2 > Explanation: Field lines are directed toward negative charges, so q 1 > 0 and q 2 < 0. 003 (part 2 of 2) 10.0 points The ratio R = q 1 q 2 satisfies 1. 1 < R < correct 2. < R < 1 3. R > 1 4. R < 1 Explanation: A stronger field is depicted by field lines of higher density, so the magnitude of q 2 is greater than the magnitude of q 1 , and | q 2 | > | q 1 | 1 > | q 1 | | q 2 | > kinsey (cbk323) oldhomework 04 Turner (56725) 2 Since q 1 < 0 and q 2 > 0, 1 < | q 1 | | q 2 | < 1 < q 1...
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solutio456n6_pdf - kinsey (cbk323) oldhomework 04 Turner...

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