Welcome back. 
We're going to be starting Module 2, that 
of resistive circuits. 
Now, as I've mentioned before with the 
concept map, we build upon concepts from 
earlier modules. 
So we finished the module on background. 
And the concepts that we're bringing 
forward into this module include current 
and voltage. 
Sources, both voltage and current 
sources. 
As well as resistance and circuits. 
In the last module, we introduced wiring 
diagrams, but we will be using that 
extensively in this module. 
The details of this module will be the 
following topics. 
Resistors, Ohm's Law, Kirchoff's Law, 
series and parallel resistors, 
superposition, and circuit equations. 
By the end of this module, you should be 
able to write down The equations that 
govern a resistive circuit