ee215-w06-exam1s

# ee215-w06-exam1s - EE215 Fundamentals of Electrical...

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Unformatted text preview: EE215: Fundamentals of Electrical Engineering Midterm Exam 1 January 23, 2006 Time: in class, 50 minutes Class: _ EE215 _____________ Section: ____________________ Name: ____________________ Student ID: ____________________ Please show all steps in solving the problems. Clearly mark your final answers and don’t forget the units. Problem 1 (20 + 5 points) (a) In the circuit above, find the equivalent resistance R ab . Answer: This circuit is very similar to Problem 3.9c. R eq = 4.8 + (16 || (8+4) || (2 + (12 || ((6 || 3) + 4)))) + 2 Ω = 4.8 + (16 || 12 || (2 + (12 || 6))) + 2 Ω = 4.8 + (16 || 12 || 6) + 2 Ω = 4.8 + 3.2 + 2 Ω = 10 Ω (b) What is the power p s delivered by the voltage source? Answer: p s = v 2 / R eq = 2.5W . + – 4.8 Ω 2 Ω 2 Ω 4 Ω 16 Ω 8 Ω 4 Ω 6 Ω 6 Ω 3 Ω 3 Ω 12 Ω 5V Problem 2 (20 + 12 + 10 points) (a) In the circuit above, determine the voltage v o between nodes c and d. Answer: This is the same circuit as Example 3.1 in the textbook....
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ee215-w06-exam1s - EE215 Fundamentals of Electrical...

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