Monday lab sections will do experiment 3 this week. All other lab sections will do experiment 4.
Be sure to print a copy of experiment #4 and bring it with you to your lab session. There will not be any copies available in the lab.
Use only Ohm's Law, Voltage Division, Current Division and the Power equation to do your circuit analysis.
Do part I as is.
In part II you will be measuring and recording the voltages with both the DMM and the scope. So set up your data tables accordingly.
For the circuit analysis in part I you MUST USE VOLTAGE DIVISION to find every voltage value. For the voltage Vi across a single resistor Ri we have:
Vi = [Ri/(R1 + R2 + R3 +R4)]*Vs
If you need the voltage across two adjacent resistors, say R1 and R2, then let
Ri = R1 + R2 in the above formula and you have it!
For the circuit analysis in part III you MUST USE CURRENT DIVISION to find every current value. In this case you MUST find Is first.
Is = Vs*(1/R1 + 1/R2 + 1/R3 + 1/R4) = Vs/Req, Where Req = R1||R2||R3||R4
then For the current Ii in a single resistor Ri we have:
Ii = [Gi/(G1 + G2 + G3 + G4)]*Is, Where G = 1/R (conductance)
For the current in two resistors, say R1 and R2, then Gi = G1 + G2