lab report (data, questions and summary), physics homework help

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rksynin

Science

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Hi, I already gathered the data for this lab so you just need to answer the questions and write a summary for it.

I attached the lab (the data and the questions), also I attached the summary instructions.

Thanks.


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leasureme sem LABORATORY REPORT Su = 1.72 X10 l=ion ✓ Raše do 168mmy Data Table 1 I (A) VR3 (V) VR2 (V) 0.59 0.250 0.500 VR4 (V) 0.99 1,94 2.96 3.84 VRI (V) 0.219 0.454 0.675 0.894 VR5 (V) J187 3.74 5.71 7.57 S14 0.750 ry 1.82 2,38 Om 0.91 1-25 1.000 20 metters 25 CM 20 metters (Cu) 02 CU 1025 cu 0:34 MData Table 2 0.34 mm 0.68 mm Combination I (A) V (V) 0.500 R, R2 R3 R4 Series 3.71 Z07 1.000 0.500 3.40 R2 R3 R4 Series 1.000 6,95 0.500 R, R, Parallel 1.000 0.74 0.500 R, Rg Parallel 1.000 0,72 0.500 R, R, Parallel 1.000 SAMPLE CALCULATIONS 1. Do the individual resistors you have measured obey Ohm's law? In answering this question, consider the least squares fits and the graphs you have made for each resistor. Remember linear behavior of V versus I is the proof of ohmic behavior. 2. Evaluate the agreement between the theoretical values for the individual resis- tances and the experimental values. As noted in the Calculations section, there may be significant disagreement between these values if the coils have been over- heated in the past. Do any of your experimental values suggest that any of your coils may have been abused in the past? 3. If a coil became heated during your measurements, its resistance would tend to increase with temperature. State if any of the graphs give evidence of heating during your measurements, which would show up at higher current as an increase in the voltage above that expected from extrapolating the data at lower current. 4. Evaluate the agreement between the experimental and theoretical values of the series combinations of resistors. Do the results support equation 3 as the model for series combination of resistors? The agreement is not expected to be perfect, but you should determine if the agreement is reasonable within the expected experimental uncertainty. ) 5. Evaluate the agreement between the experimental and theoretical values of the parallel combinations of resistors. Do the results support equation 4 as the model for the parallel combination of resistors within the expected experimental uncer- tainty? 6. According to the data given in step 1 of the Calculations section, the first and sec- ond coils have the same length and the third and fourth coils have the same length. They differ only in cross-sectional area. According to theory, what should be the ratio of the resistance of the second coil to the first and the fourth coil to the third? Calculate these ratios for your experimental results and compare the agreement with the expected ratio. 7. According to the data given in step 1 of the Calculations section, the first and third coils have the same cross-sectional area and the second and fourth coils have the same cross-sectional area. They differ only in length. According to the- ory, what should be the ratio of the resistance of the third coil to the first and the fourth coil to the second? Calculate these ratios for your experimental results and compare the agreement with the expected ratio. 8. Evaluate the extent to which you have accomplished the objectives of this labo- ratory The body of the report should consist of the following: 1. Title 2. Objective 3. Procedure 4. Data 5. Calculations 6. Results and Conclusion
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