ECE 211 Circuit Analysis I
Supplemental Notes and Examples
HOMEWORK SOLUTION HELP
HW problem solving techniques
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It is usually helpful to work in a group on at least some of the HW assignments. You'll learn more if you work with others. However, be sure that your HW solution writeup is your own, in your own unique style and phrasing. Note: If you turn in a HW solution that is simply a copy (even though it is in your handwriting) of someone else's solution, you will all get a zero for that solution set. The solution must be written up in your own words. |
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| 1. Carefully read the problem statement and look at all the schematic circuit details (if included). What are you being asked to solve? | |
| 2. Make a preliminary pencil sketch of the circuit schematic or system, and write down those principles you think you might need (e.g. Ohm's Law, Kirchhoff's Current Law, Superposition). | |
| 3. Decide if there is more than one solution approach; if there is, pick the one that seems to be the most promising. For instance, maybe you can analyze a circuit using only KVL and Thevenin's Theorem; alternately, maybe you can use the Principle of Superposition. | |
| 4. Make a first try at solving the problem. It is usually best to set up the equations in symbolic (not numerical) form. Toward the end of the problem, you can insert numerical values. | |
| 5. Don't forget to write down the units of a numerical answer (e.g. V for volts, mA for milliamps, etc.). | |
| 6. Look at your solution critically. Does the numerical answer seem about right? Are the units correct? Evaluate your solution before moving on to the next problem. Develop critical reasoning skills - don't accept sloppy work from yourself. | |
| 7. After evaluating your solution, try to check its accuracy by seeing if the answers are consistent. | |
| 8. If the answer seems correct, write up your solution neatly. Include all intermediate steps, and don't forget to put units on numerical final answers. | |
| 9. For those problems requiring it, learn how to present a good graph. Click here for examples. |