5.1+Electric+Currents

=Learning Outcome:=

toc =Resistance and Resistivity:=
 * Go to @http://physics-online.com
 * Select Core topic 5 Electric Currents, and then the first heading Current, resistivity, under it.
 * View Java applet 974 Resistances at the molecular level...discuss your view...conclude about cause of flow of electric current and its connectivity with free electrons,and how resistance can be defined qualitatively


 * Play with the following pHET simulation and construct your own quantitative approach about resistance

media type="custom" key="13540000"


 * Think about resistivity....what can affect it ..how can it be measured? Visit the physclip 2679 under the heading **Resistivity**.,

media type="custom" key="13540060"
 * Enter the following pHET DC Virtual lab..construct your own circuits and write few important concepts that you can develop from here.

=Ohm's Law:= media type="custom" key="13557294"
 * 1) Play with the following Applet and construct your own statement and mathematical form about Ohm's Law

=Potential Divider:=
 * 1) Go to @http://physics-online.com
 * 2) Click the core under IB, and then topic 5 Electric currents
 * 3) Under Electric currents click the third option Ohm's Law
 * 4) Under this option go to Potential Divider Applet 2485 and construct your theory about potential divider.