hw1_solutions - Thomas and A. J. Rosa). 6. Problem 1-21...

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ECE 201 Electric Circuits Name: Fall 2009 Homework #1 (Due: Friday, September 11, 2009) Circle or box your answer (don’t forget units). Staple any additional paper used to arrive at your answers to this sheet. 1. Express the following quantities using appropriate engineering notation (i.e., state the numeric to the nearest standard prefix). a) 3.75 10 5 Joules b) 1,500 Hertz c) 0.00525 Ohms d) 220 10 -12 Farads e) 7400 10 -5 Henrys 2. A wire carries a constant current of 100 (mA). How many coulombs flow past a given point in the wire in 1 minute? 3. For a given lithium ion battery, it can supply 0.85 ampere-hours, or 850 (mAh) with a constant output voltage of 3.6 (V). How much energy is stored in this lithium ion battery? 4. For the battery described in problem 3 above, how long can it supply 50 (mA) to a load connected to the battery? 5. Problem 1-14 from your textbook (The Analysis and Design of Linear Circuits , Sixth Ed., by R. E.
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Unformatted text preview: Thomas and A. J. Rosa). 6. Problem 1-21 from your textbook (The Analysis and Design of Linear Circuits , Sixth Ed., by R. E. Thomas and A. J. Rosa). 7. Problem 1-23 from your textbook (The Analysis and Design of Linear Circuits , Sixth Ed., by R. E. Thomas and A. J. Rosa). 8. The maximum power a device can dissipate is 0.25 (W). Find the maximum current allowed by the device power rating when the voltage across it is 3 (V). 9. How much energy is imparted to an electron that flows through a 12 (V) battery from the positive terminal to the negative terminal? 10. For the following two parts, provide the four answers to each part A) Specify the color code for the following resistors a) 2.2k 5% b) 1G 20% c) 330k 10% d) 1.5 5% B) Specify the resistance range of the following resistors a) Green-White-Green b) Yellow-Violet-Orange-Silver c) Green-Gray-Red-Silver d) Brown-Red-Red-Gold Solutions...
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hw1_solutions - Thomas and A. J. Rosa). 6. Problem 1-21...

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