nodal_analysis_problem3

nodal_analysis_problem3 - Ohm s law, if we inspect this...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Sample Problem Topic: Nodal Analysis Statement of Problem: Given the circuit shown in the figure below Find a) The value of i a b) The value of i b c) The value of V 0 Solution This solution uses the Node Voltage/Nodal Analysis technique. We will define nodes and solve linear equations using these defined nodes as reference. Define v 1 : 50V 20Ω 80Ω v 1 i a i b Create the linear equation. The equation is based using the bottom node as ground, or 0. ° 1 50 ± 4 + ° 1 20 + ° 1 80 = 0 Each component is defined by following the v 1 node to ground. Looking closely, we are taking a voltage, and dividing by a resistance. Using
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Ohm s law, if we inspect this more closely, we are defining currents. V = IR, rearranging this equation, we get: V/R = I Thus, if there were a current source in the circuit, we would simply add the value to the equation. c) If we solve the function above, we find that v1 = 40V. Knowing the voltage at the node, and knowing that parallel resistors share the same voltage drop, we can simply use Ohm s law to determine the currents through each branch. V = I *R 40 = I * 80 40 = I * 20 b) I 80 = .5A a) I 20 = 2A...
View Full Document

This note was uploaded on 10/30/2011 for the course EE 215 taught by Professor Unknown during the Spring '05 term at University of Washington.

Ask a homework question - tutors are online