Report_Magnetic_Forces

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University of Ontario Institute of Technology *

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Physics

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Apr 3, 2024

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Physics II Laboratory Faculty of Science, Ontario Tech University Report for Experiment PhyII-03: 1Magnetic Forces on Wires Student name_______________________ CRN___________ Date___________ Experiment 1: Force vs. Current # of Magnets: 6 Current Loop Length: 4.27 Table 1 Current Mass Mass difference Force (A) (grams) (grams) (mN) 0 164.8 0 1615.04 0.5 164.9 0.1 1616.02 1.0 165.1 0.3 1617.98 1.5 165.3 0.5 1619.94 2.0 165.5 0.7 1621.90 2.5 165.7 0.9 1623.86 3.0 165.9 1.1 1625.82 3.5 166.2 1.4 1628.76 4.0 166.5 1.7 1631.70 4.5 166.7 1.9 1633.66 5.0 166.9 2.1 1635.62 B = ____ 2.295 Gauss_______ Insert the Force vs. Current graph here. Report for Experiment PhyII-03: Magnetic Forces on Wires Page 1 of 5
Physics II Laboratory Faculty of Science, Ontario Tech University Experiment 2: Force vs. Current Loop Length # of Magnets: 6 Current I : 2.75 amps Mass with I = 0: 164.8 Table 2 Length Mass Mass difference Force (cm) (grams) (grams) (mN) 2.2 165.0 0.2 1616.02 1.2 164.9 0.1 1617.00 3.18 165.2 0.4 1618.96 4.18 165.4 0.6 1620.02 3.2 165.4 0.6 1620.02 4.2 165.9 1.1 1625.82 B = ______3.56 Gauss__________ Report for Experiment PhyII-03: Magnetic Forces on Wires Page 2 of 5
Physics II Laboratory Faculty of Science, Ontario Tech University Insert the Force vs. Conductor Length graph here. Experiment 3: Force vs. Magnetic Field Current I : 2.5 amps Current Loop Length: Table 3 Magnetic Field Mass m 0 I = 0 Mass m ' I > 0 Mass difference Force (# of magnets) (grams) (grams) m ' – m 0 (grams) (mN) 1 9.98 100 0.2 1.96   2 112.8 113.2 0.4 3.92   3 125.8 126.5 0.7 6.86   4 138.8 139.5 0.7 6.86   5 151.6 152.2 0.6 5.88   Report for Experiment PhyII-03: Magnetic Forces on Wires Page 3 of 5
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Physics II Laboratory Faculty of Science, Ontario Tech University 6 164.7 165.8 1.1 10.78   Insert the Force vs. Magnetic Field graph here. Final Analysis Proportionality expression: __F = I*L*B_______ The relationship between magnetic force, length, current, and magnetic field can be described through the formula for magnetic force experienced by current in a magnetic field. According to the right hand rule, the force (F) acting on a current (I) flowing through a conductor of a length (L) in a magnetic field (B) is given by F=ILB. This formula tells us that the magnetic force is directly proportionate to the length of the conductor, current in the conductor and strength of the magnetic field. This means if we increase any of these parameters, the result will be an increase in force. Report for Experiment PhyII-03: Magnetic Forces on Wires Page 4 of 5
Physics II Laboratory Faculty of Science, Ontario Tech University Conclusion The purpose of this lab is to experiment with the relationship between the magnetic force, length, current and magnetic field. The equipment used to carryout this lab were current loops, current loop holder, magnet holder, ohaus cent o gram balance, low voltage DC power supply, large base, support rod and banana plug cords. The dependence between a magnetic force and a conductor length is that the force is directly proportionate to the conductor length. If the conductor length is increased then the magnetic force will be increased, this relationship only holds if the conductor is perpendicular to the magnetic field lines. The dependence of the magnetic force and magnetic field, like the conductor is also directly proportionate to each other, where they must also be perpendicular. As stated earlier, the dependence between magnetic force and an angle between a magnetic field direction and a direction of a current is that they must be perpendicular to each other. This can be seen in the formula F = BILSin(θ). If theta is equal 90, sin will be one, maximizing the strength, other wise the angle would lower the magnitude of the force. The vector expression for the magnetic force on a current-carrying conductor is the cross product. This expression accounts for both the magnitude and direction of the magnetic force on a current-carrying conductor in a magnetic field. Report for Experiment PhyII-03: Magnetic Forces on Wires Page 5 of 5

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