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EECS314_W08_HW1

# EECS314_W08_HW1 - EECS 314 Winter 2008 Homework set 1...

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EECS 314 Winter 2008 Homework set 1 Student’s name ___________________________ Discussion section # _______ (Last, First, write legibly, use ink) (use ink) Instructor is not responsible for grading and entering scores for HW papers lacking clear information in the required fields above © 2008 Alexander Ganago Page 1 of 2 Scores for the HW set: Problem 1 2 3 4 5 6 7 Total Score Problem 1 KCL, KVL, and the Passive Sign Convention The Assignment Consider the circuit shown on this diagram. Note that nodes A, C and B are all connected with wires thus they are in fact one node! Some currents and some voltages in the circuit are given in the table below and on the diagrams on the following page; your challenge is to calculate the unknown voltages and currents, as well as the power absorbed by each element. Element 1 2 3 4 5 6 7 Current through 4 A 2 A 3 A 5 A Voltage across 8 V 6 V 5 V Power absorbed Part 1 (10 points) Currents through 4 elements out of 7 are given (see the diagram below, on the right). Part 1 2 3 Total Score

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EECS 314 Winter 2008 Homework set 1 Student’s name ___________________________ Discussion section # _______ (Last, First, write legibly, use ink) (use ink) Instructor is not responsible for grading and entering scores for HW papers lacking clear information in the required fields above © 2008 Alexander Ganago Page 2 of 2 Use KCL to calculate the unknown currents. Record your results in the table above (do not omit the units of measure). Choose the signs according to your reference marks. Show the magnitudes and directions of all currents on the diagram below (on the left). Problem 1 Part 2 (10 points) Voltages across 3 elements out of 7 are given on the diagram. Use KVL to calculate the unknown voltages labeled V1, V2, V3, and V5, with the reference marks already shown on the diagram. Record your results in the table above (do not omit the units of measure). Problem 1 Part 3 (20 points) Use the given currents and voltages along with your results of Parts 1 and 2 to calculate the power absorbed by each circuit element. Apply the Passive Sign Convention (negative power is supplied to the circuit). Record your results in the table above (do not omit the units of measure). Verify the power balance (the algebraic sum of all powers must equal zero). On the circuit diagram on page 1, circle the elements supplying electric power to the circuit. Show your work for all parts on separate pages.
EECS 314 Winter 2008 Homework set 1 Student’s name ___________________________ Discussion section # _______ (Last, First, write legibly, use ink) (use ink) Instructor is not responsible for grading and entering scores for HW papers lacking clear information in the required fields above © 2008 Alexander Ganago Page 1 of 2 Problem 2 Ohm’s law; independent sources The Assignment Part 1 (20 points) For the circuit on the diagram, calculate the power absorbed by each element and verify the power balance.

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