Concept Questions on Gauss's Law and Electric Flux

PRS05 Class Pace – Equations How is the pace at which I go through equations in the power point documents? 1. Too Fast 2. Too Slow 3. Okay PRS05 Class Pace – Concepts How is the pace at which I go through concepts during a presentation? 1. Too Fast 2. Too Slow 3. Okay PRS05 Class Pace – PRSDo I spend enough time discussing the correct answers to the PRS questions? 1. Not enough time 2. Too much time 3. Okay PRS05 Class Pace – Table ProblemsDo you have enough time to do the table based in class problems? 1. Not enough time 2. Too much time 3. Okay PRS05 Preparation Do you read before coming to class? 1. Yes, summary & reading 2. Yes, summary only 3. I scan the summary 4. No, not at all PRS05 Note Taking Do you take notes in class? 1. Yes, on lecture print outs 2. Yes, in “traditional” way 3. No PRS05 E from VThe graph above shows a potential V as a function of x. The magnitude of the electric field for x > 0 is 1. larger than that for x < 0 2. smaller than that for x < 0 3. equal to that for x < 0 4. I don’t know PRS05 E from V The graph above shows a potential V as a function of x. Which is true? 1. Ex > 0 is > 0 and Ex < 0 is > 0 2. Ex > 0 is > 0 and Ex < 0 is < 0 3. Ex > 0 is < 0 and Ex < 0 is < 0 4. Ex > 0 is < 0 and Ex < 0 is > 0 5. I don’t know PRS05 Flux Direction The flux through the planar surface below (positive unit normal to left) ˆn 1. is positive. 2. is negative. 3. is zero. 4. I don’t know+q -qPRS05 Flux Through Sphere The total flux through the above spherical surface is 1. positive. 2. negative. 3. zero. 4. I don’t know +q PRS05 Should We Use Gauss’ Law?For which of the following uniform charge distributions can we use Gauss’ Law to determine the electric field? A. Concentric nested spherical shells B. Non-concentric nested spherical shells C. Finite line of charge D. Infinite line of charge E. Thin, infinite, sheet of charge F. Thick, infinite, slab of charge 1. None of them 2. All of them 3. A, B, C only 4. D, E, F only 5. A, D, E, F only 6. C, D only 7. A, D, E only 8. C, D, E, F onlyPRS05 Spherical Shell We just saw that in a solid sphere of charge the electric field grows linearly with distance. Inside the charged spherical shell at left (r