260 EGR Circuit Analysis File: N260H1
Due date: ________________
Homework Assignment #1
Reading Assignment:
Chapter 1 in Electric Circuits, 8th Edition, by Nilsson
Problem Assignment:
1) Chapter 1 # 8, 9, 11, 12, 15, 16, 17, 18, 19, 22, 26, 29 2) Using the power rating values from Table 1 (or from the Lecture #2 notes), calculate the following if the cost of electricity is $0.08/kWh: A) The cost to run an air conditioner 12 h/day for 30 days B) The cost to watch a television for 4 h/day for 1 year C) The cost to dry your hair with a blow dryer (10 minutes) Notes: 1) On problem 1.16, begin by drawing a graph of the voltage v(t) and finding an equation for v(t) in the form y = mx + b. Then find p(t) = v(t)i(t) and integrate p(t) to find energy. 2) On problem 1.18b, to find total energy integrate power with an upper limit of infinity. 3) Be sure to follow the required PROBLEM FORMAT for every assignment in this course as specified below. PROBLEM FORMAT: Write out all given information with the problem, including problem statements, circuits, sketches, etc., Box your final answers Include significant 3 digits with all non-integer answers Present you work neatly Work all problems in pencil (so that you can erase errors) Include units with your final answers when appropriate Use correct mathematical notation in your solutions
Selected Answers:
(Note: Answers have also been provided for many problems that were not assigned. A good way to study for a test is to work extra problems.) 1.8) 2.18 x 1014 electrons/s 1.11) W = 16.2 kJ 1.15) a) Car A has the dead battery b) W = 21.6 kJ 1.16) W = 43.2 kJ 1.18) a) P(10 ms) = 223.79 W b) W = 4 J 1.19) a) p(t) = 2.5t W 0s<t<4s p(t) = 0 4 s < t < 8s p(t) = 2.5t 30 W 8 s < t < 16 ...