phys2426_exp8_report_template

Experiment 8: Magnetic Field of a Solenoid 11/3/2023 Student Name: REPORT Section Number: Instructions 1) Follow all of the lab activity steps given in the Lab Procedure. 2) 3) 4) Attach additional sheets of paper that clearly (NEATLY) show all of your calculations performed during this experiment. Results 1) If you were using a physical probe, what is the meaning of a negative magnetic field reading? The procedure normally asks you to only record the absolute value of the magnetic field. Why? Write out your answer in a clear and well supported paragraph. 2) You probably noticed that the simulation returned varying values for the magnetic field. What other source(s) of error could occur from the simulation? How would these sources of error affect calculated value of N? Write out your your answer in a clear and well supported paragraph. 3) The longer and thinner a solenoid is, the more ideal its behavior. That is, the magnetic field at the center of a longer, thinner solenoid is closer to the ideal B we use to calculate N. Based on what you observed, did your results from the simulation show this? Write out your answer in a clear and well supported paragraph. Attach your completed data tables and graphs to this page. TYPE YOUR ANSWERS IN THE PROVIDED SPACES below & in your data tables. A negative reading value indicates that the field is pointing in the opposite direction as predicted. That is, because the magnetic field varies on direction, its vector number is similar to electric fields, with a negative sign representing attraction and a positive sign representing repulsion. The magnetic field's absolute value is only measured because it is a vector quantity, therefore both its value and its direction are measured. Human error is one possible source of error; this error occurs when a calculation error occurs. Another sort of error is coil resistance; coil resistance causes the current in the circuit to drop, which is why there may be some errors when calculating the magnetic field due to solenoids. The third source of error is the earth's magnetic field, which will become involved with the magnetic field due to the solenoid, causing a difference in the results. Outside of an ideal solenoid, the magnetic field is zero. Because a solenoid's magnetic field is inversely proportional to its length. As a result, as the length rises, the magnetic field decreases.

Experiment 8: Magnetic Field of a Solenoid 11/3/2023 Student Name: DATA Section Number: Coil #1 Table 8.1 L = 11.8 cm I (A) B 1 0.003123 0.00312 0.00321 0.00304 2 0.006163 0.00637 0.00605 0.00607 3 0.00941 0.00917 0.00947 0.00959 4 0.012333 0.0127 0.0121 0.0122 5 0.0156 0.0158 0.0157 0.0153 N Actual Calc. % Diff 300 310 3.28% Coil #2 Table 8.2 L = 14.8 cm I B 1 0.00484 0.00483 0.00469 0.005 2 0.009773 0.00993 0.00944 0.00995 3 0.014633 0.0143 0.015 0.0146 4 0.0191 0.0192 0.0194 0.0187 5 0.0241 0.0237 0.0241 0.0245 N Actual Calc. % Diff 570 480 17.14% B av (T) B av

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.005 0.01 0.015 0.02 0.025 0.03 f(x) = 0.004784666666667 x + 0.000135333333333 Coil 2: B vs. current I I B