MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2014 Exam One is Thursday Evening 7:30- 9:30 pm Feb 27 The Friday class on Feb 28, 2014 is cancelled because of the evening exam. Room assignments are by section, as follows: L01 50-340 Walker Memorial L02 26-152 L03 32-123 L04 26-100 L05 34-101 L06 26-100 L07 32-123 L08 34-101 L09 50-340 Walker Memorial Conflict Exam One Friday Feb 28 Times and Room: 8-10 am 32-082 10-12 noon 32-082 If you have a conflict due to an officially scheduled MIT class activity then you need to email Dr. Peter Dourmashkin ([email protected]) and get his ok if you plan to take the conflict exam. Please include your reason and which time you would like to take the Conflict Exam One. If you have any additional conflict issues (religious holidays, etc., please contact Peter Dourmashkin).MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2014 Exam Preparation To study for this exam, we suggest that you review pre-class reading questions, in-class problems, in-class concept questions, Friday problem solving sessions, problem sets, relevant parts of the study guide, class notes, and work through past exams. What We Expect From You on The Exam (1) Ability to calculate the electric field of both discrete and continuous charge distributions. We may give you a problem on setting up the integral for a continuous charge distribution, although we do not necessarily expect you to do the integral, unless it is particularly easy. You should be able to set up problems like: calculating the field of a small number of point charges, the field on the perpendicular bisector of a finite line of charge; the field on the axis of a ring of charge; and so on. (2) To be able to recognize and/or draw the electric field line patterns for a small number of discrete charges, for example two point charges of the same or of opposite sign. (3) To be able to apply the principle of superposition to electrostatic problems. (4) To be able to calculate the electrostatic force on a charge moving in an electric field and to apply either Newton’s Second Law or the work-kinetic energy theorem to such motion. (5) An understanding of how to use Gauss's Law. In particular, we may give you a problem that involve finding the electric field of a non-uniformly filled cylinder, slab, or sphere of charge. You must be able to explain the steps involved in this process clearly, and in particular to argue how to evaluate E ⋅d A∫∫ on every part of the closed surface, which you must choose to apply Gauss's Law, even those parts for which this integral is zero. (6) An understanding of how to calculate the electric potential function of a discrete set of charges, that is the use of the equation V (r) =qi4π εor −rii=1N∑ for the potential of N charges qi located at positions ri with V (∞) = 0. Also you must know how to calculate the configuration energy necessary to assemble this set of charges. For a continuous charge distribution, you must know how to set up the integrand for the electric potential V (r) =dq4π εor −′rsource∫MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2014 (7) You must know how to calculate the change in potential energy when you move a charged object with charge qv from one point in space to another, ΔU = qΔV and apply the energy principle to a closed and isolated system 0 = ΔU + ΔK. (8) The ability to calculate the electric potential given the electric field e.g. being able to apply the equation Vb−Va= −E ⋅dlab∫ (9) To be able to answer qualitative conceptual questions that require no calculation. There will be concept questions similar to those done in class, where you will be asked to make a qualitative choice out of a multiple set of choices, and to explain your choice qualitatively in
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