EE 42 - Spring 2010 - Niknejad - Midterm 2 - University of California Berkeley EE 42\/100 Spring 2010 Prof A Niknejad Midterm Exam(closed book Thursday

EE 42 - Spring 2010 - Niknejad - Midterm 2 - University of...

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University of California, Berkeley Spring 2010 EE 42/100 Prof. A. Niknejad Midterm Exam (closed book) Thursday, April 8, 2010 Guidelines : Closed book. You may use a calculator. Do not unstaple the exam. In order to maximize your score, write clearly and indicate each step of your calculations. We cannot give you partial credit if we do not understand your reasoning. Feel free to use scratch paper but transfer your final answer to the exam. Electron charge q = 1 . 60217646 × 10 - 19 C. KCL: Kirchhoff’s Current Law states that the net current flow into a node (or super-node or any closed surface) is zero. X I k = 0 KVL: Kirchhoff’s Voltage Law states that the net voltage drop around any loop is zero. X V k = 0 Power flow into a component: (positive means power is absorbed or dissipated. P = I · V Ohm’s Law: V = I · R or I = G · V where G = R - 1 . Power dissipated in a resistor: P = I 2 R = V 2 G Resistors in series add: R = R 1 + R 2 + · · · Conductances in parallel add: G = G 1 + G 2 + · · · For two resistors in parallel, this implies R || = 1 1 R 1 + 1 R 2 When a chain of resistors are in series and connected to a voltage source, the voltage across the k th resistor is given by the voltage divider forma V k = V s R k R 1 + R 2 + · · ·
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When a chain of conductors are in parallel and connected to a current source, the current through the k th conductor is given by the current divider formula I k = I s G k G 1 + G 2 + · · ·
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  • Fall '08
  • CHUA
  • Resistor, Electrical impedance, Thévenin's theorem, Series and parallel circuits, Analog Circuits

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