Homework and Lab |
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| Please refer to WebAssign for the majority of both your homework assignments and solutions. Solutions are posted on-line after the due date. If life happens and you need adjustments made to a homework due-date or number of answer attempts please contact me. For major adjustments I ask that you complete a UEF. | |
| There is a straightforward way to think about the electric field outside a sphere produced by a uniformly charged sphere or - VIDEO E-field from sphere | |
You can use symmetry to determine the electric field at a vertice of an equilateral triangle if charges are at the other vertices. You do superimpose the electric fields - that is add the electric fields. But remember you must sum the vectors. VIDEO Equilateral Triangle E-field |
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| The molecules in materials can have an induced polarization (i.e. dipoles). The polarizability of materialsis variable.VIDEO Polarizability of Material | |
| The really cool aspect of a charge that induces a dipole is that the charge in turn feels a force on it. This is an attractive force which - as the charge moves closer to the material - increases the induced dipole which in turn increases the resultant attractive force. This force between an induced dipole and a point charge is not as familiar but none-the-less is important. VIDEO Force on point charge by induced dipole | |
| How do you determine the electric field of a bent wire? We can do this by summing the parts or by taking the integral (summing up a lot of parts).VIDEO Electric Field via Summation and Electric Field via Integration | |
| The derivative of the sine and cosine function. This is not a proof - rather a conceptual sketch.VIDEO Derivative of Sine and Cosine | |
| How do you determine the correct prescriptio for Aunt Peg? There are many different ways to think about this problem. VIDEO Aunt Peg 1 and Aunt Peg 2 | |
Additional Assignments:
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Exam Examples |
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Use the tests below to practice. The best way to practice is to take the test and then look at the answer key. If you just look at the answer key you actually do not learn. The sample tests below are based on a different textbook so the order of the content covered is slightly different than our current textbook. Hence, your actual exam will be similar in format but the content coverage will differ. Note: You get most of the points not for a correct choice on a multiple choice problem but rather for explaining your choice correctly. It is often good to create a summary of useful concepts and equations for yourself as a study guide. There are many useful concepts/equations avaiable that you can find... however, if you do not create it yourself you have robbed yourself of a learning opportunity. |
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Exam #1 |
Chapters 14 to 16 |
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Exam #2 |
Chapters 17 to 19 |
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Exam #3 |
Chapters 20 to 22 |
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Final Exam |
Final Exam Examples: Spring 2007 Exam |
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Physics in action... Cog.mov |
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