ANALYSIS 1. Examine the results of Part I. What is the relationship between the three voltage readings: V1, V2, and Vror? 2. Using the measurements you made above and your knowledge of Ohm's law, calculate the equivalent resistance (Reg) of the circuit for each of the three series circuits you tested. 3. Study the equivalent resistance readings for the series circuits. Can you come up with a rule for the equivalent resistance (Req) of a series circuit with two resistors? 4. For each of the three series circuits, compare the experimental results with the resistance calculated using your rule. In evaluating your results, consider the tolerance of each resistor by using the minimum and maximum values in your calculations. 5. Using the measurements you have made above and your knowledge of Ohm's law, calculate the equivalent resistance (Req) of the circuit for each of the three parallel circuits you tested. 6. Study the equivalent resistance readings for the parallel circuits. Devise a rule for the equivalent resistance of a parallel circuit of two resistors. 7. Examine the results of Part 11. What do you notice about the relationship between the three voltage readings V1, V2, and VTOT in parallel circuits? 8. What did you discover about the current ow in a series circuit in Part III? Physics with Vernier 23 -1 Jeriment 23 9. What did you discover about the current ow in a parallel circuit in Part III? 10. If the two measured currents in your parallel circuit were not the same, which resistor had the larger current going through it? Why? DATA TABLE Part I Series circuits R1 R2 V1 V2 Req VTOT (2) (2) (A) (V) (V ) (V ) 1 10 10 0.1312 1.365 1.095 5 2.607 2 10 51 0.0448 0.451 2.410 8.4 2.917 3 51 51 0.0249 1.461 1.470 25.5 3.020 Part II Parallel circuits R1 R2 V1 V2 Req VTOT (2) (A) (V ) (V) (2) (V ) 51 51 0.1115 2.834 2.838 25.5 2.836 2 51 68 0.0957 2.778 2.693 29.1 2.745 3 68 68 0.0816 2.655 2.770 34 2.654 Part III Currents R1 R2 /1 12 (2) (A) (A) 10 51 0.0505 0.0521 2 51 68 0.0601 0.0439