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Lesson 3: Reducing Simple SeriesParallel Combination Circuits
Some people can look at this circuit and tell right away that the total resistance is given by:

Example Suppose you are given this set of values:

Solution Plug the given values into the equation and solve for R_{T}:


But let's approach the problem in a slightly different wayone that will eventually
make it possible for you to solve circuits that are far more complicated. Here is the
combination circuit with values assigned to the resistors
First combine the parallel resistors, R_{1} and R_{2}, to form equivalent resistance R_{2, 3}: Then combine the series resistors, R_{1} and R_{2, 3}, to get the value for equivalent resistance R_{1, 2, 3}: :Any resistor circuit can indeed be portrayed as a single resistor. 
Author and content provider: David L.Heiserman Publisher: SweetHaven Publishing Services 
Copyright © 2005,
2014 David L.
Heiserman 