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Welcome back. 
We're going to be starting Module 2, that 

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of resistive circuits. 
Now, as I've mentioned before with the 

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concept map, we build upon concepts from 
earlier modules. 

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So we finished the module on background. 
And the concepts that we're bringing 

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forward into this module include current 
and voltage. 

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Sources, both voltage and current 
sources. 

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As well as resistance and circuits. 
In the last module, we introduced wiring 

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diagrams, but we will be using that 
extensively in this module. 

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The details of this module will be the 
following topics. 

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Resistors, Ohm's Law, Kirchoff's Law, 
series and parallel resistors, 

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superposition, and circuit equations. 
By the end of this module, you should be 

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able to write down The equations that 
govern a resistive circuit