"Force on a Current-Carrying Wire" Theory: F=Blesine You will be performing three labs in one: Part 1. Force is a function of current... F is f(1) 1. Record the scale reading as the current is varied from zero to amps (your instructor will provide a value). 2. Make note that the angle between the wire and the field is 90". 3. Graph Force vs. Current. 4. Use the slope of the graph and the known value of the length of the wire, to determine the strength of the magnetic field (pay attention to the units). Part 2. Force is a function of length.. F is f(e) 1. Record the scale reading as you select from the different length wires provided with the lab. 2. Keep the current at a constant value of amps (your instructor will provide a value). 3. Graph Force vs. length. 4. What value can be determined/verified by the slope of the graph? Part 3. Force is a function of angle... F is f(0) 1. Record the scale reading as the angle is varied from zero to 180 degrees. 2. Graph Force vs. angle. 3. Make a 2nd graph that has been linearized. (add a column to your data table that allows for a linear graph, when force is plotted on the y-axis)Experiment 1 - Part A in Answer Sheet Experiment 4 - Part B in Answer Sheet Experiment 4 - Part C in Answer Sheet Current (A) Mass (g) Force (N) Angle (degrees) Mass Force (N) Angle (degrees) Mass Force (N) 0 0 0 0 O 0 0 0.5 0.16 0.00137 5 0.08 0.000784 0.08 0.00069 .0.3 -0.00275 10 0.16 0.001569 10 -0. 16 -0.00159 5 0.45 -0.0042 15 0.25 0.002351 15 0.24 0.00239 2 -0.57 -0.00567 20 0.32 0.003135 20 -0.31 -0.00315 2.5 -0.71 -0.00705 25 0.39 0.003819 25 0.42 -0.00405 3 0.89 -0.00864 30 0.46 0.004601 30 0.48 -0.00484 3.5 -1.01 0.01 35 0.52 0.005194 35 0.55 -0.00567 4 -1.15 0.015 40 0.6 0.005881 40 0.63 -0.00621 4.5 -1.33 -0.01287 45 0.66 0.006468 45 -0.7 -0.00686 5 -1.44 -0.01479 50 0.7 0.006959 50 -0.76 -0.00751 55 0.74 0.007391 55 -0.82 -0.00803 60 0.79 0.007642 60 0.87 -0.00876 65 0.83 0.008038 65 -0.92 -0.00904 70 0.86 0.008351 70 -0.96 0.00949 75 0.88 0.008624 75 -1 -0.00989 80 0.89 0.008729 80 -1.01 0.01 85 0.9 0.008823 85 -1.03 -0.01014 90 0.9 0.008823 90 1.04 -0.01021Experiment 1: Force versus Current Procedure If you're using a quadruple-beam balance: D Set up the apparatus as shown in figure 1.1. Determine the mass of the magnet holder and Current Loop magnets with no current flowing. Record this value in the column under "Mass" in Table 1.1. Main Unit 3 Set the current to 0.5 amp. Determine the new Magnet "mass" of the magnet assembly. Record this value Assembly under "Mass" in Table 1.1. 0.01 gram ) Subtract the mass value with the current flowing Lab Stand Balance from the value with no current flowing. Record this difference as the "Force." Figure 1.1 Equipment Setup 5) Increase the current in 0.5 amp increments to a maximum of 5.0 amp, each time repeating steps 2-4. If you're using an electronic balance: D Set up the apparatus as shown in figure 1.1. Place the magnet assembly on the pan of the balance. With no current flowing, press the TARE button, bringing the reading to 0.00 grams. 3 Now turn the current on to 0.5 amp, and record the mass value in the "Force" column of Table 1.1. 4 Increase the current in 0.5 amp increments to a maximum of 5.0 amp, each time recording the new "Force" value. Data Processing Plot a graph of Force (vertical axis) versus Current (horizontal axis). Analysis What is the nature of the relationship between these two variables? What does this tell us about how changes in the current will affect the force acting on a wire that is inside a magnetic field? Table 1.1 Data Current "Mass" "Force" Current "Mass" "Force" ( amps) (gram) (gram) (amps) ( gram) (gram) 0.0 3.0 0.5 3.5 1.0 4.0 1.5 4.5 2.0 5.0 2.5Experiment 4: Force versus Angle Procedure 1. Set up the apparatus as shown in Figure 4.1. If you are using a quadruple-beam balance: 2. Determine the mass of the Magnet Assembly with Main Unit no current flowing. Record this value in Table 4.1 on the appropriate line. SF-8608 Accessory Magnet 3. Set the angle to 0" with the direction of the coil of Unit 1Assembly wire approximately parallel to the magnetic field. Set the current to 1.0 amp. Determine the new Lab Stand 0.01 gram Balance "mass" of the Magnet Assembly. Record this value under "Mass" in Table 4.1. Figure 4.1 Equipment Setup 4. Subtract the mass measured with no current flowing from the mass measured with current flowing. Record the difference as the "Force." 5. Increase the angle in 5" increments up to 90", and then in -5" increments to -90". At each angle, repeat the mass/force measurement. If you are using an electronic balance: 2. Place the magnet assembly on the pan of the balance. With no current flowing, press the TARE button, bringing the reading to 0.00 grams. 3. Set the angle to 0" with the direction of the coil of wire approximately parallel to the magnetic field. Set the current to 1.0 amp. Record the mass value in the "Force" column of Table 4.1. 4. Increase the angle in 5" increments up to 90", and then in -5" increments to -90". At each angle, repeat the mass/force measurement. Data Processing Plot a graph of Force (vertical axis) versus Angle (horizontal axis). Analysis What is the relationship between these two variables? How do changes in the angle between the current and the magnetic field affect the force acting between them? What angle produces the greatest force? What angle produces the least force? Table 4.1 Data "Mass" with I = 0: Angle "Mass" "Force" Angle "Mass" "Force" Angle "Mass" "Force" Angle "Mass" "Force" (0) (gram) (gram) (0) (gram) (gram) (0) (gram) (gram) (e) (gram) (gram) 50 -50 u e 55 -55 10 60 -10 -60 15 65 -15 -65 20 70 -20 -70 25 75 -25 -75 30 80 -30 -80 35 85 -35 -85 40 90 -40 -90 45 45