Data Analysis Questions. Do the following in your lab report. _____________________________________________________________
1. Graph V vs. I on a separate graph each resisting device in circuit 1: (steps 3-7). Find the slopes of the linear parts of these graphs. Compare these values to the ones found in step 1 (in procedure). Which of the devices is OHMIC? why?
2. Make a table from your data, of the POWER vs. CURRENT^2. Graph this. Are these graphs similar to the previous ones (step 1 here)? Why or why not?
Circuit 2&33. Find the RESISTANCE for each resistor from the measured values of the VOLTAGE and CURRENT: (steps 8-13). Compare these values to the ones you recorded in step 1.
4. Calculate Req for circuits 2-3. (Equations 3&4)
5. Find the total RESISTANCE-Rt of each circuit. It is given by :
where,
I - the current through the power supply
Vps - the voltage across the power supply.
6. Compare the value of Rt to Req. Comment on your answer.
P.S. DON'T FORGET UNITS.
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