PHY 132 Current Balance Force vs Length of Wire Set the curr

PHY 132: Current Balance Force vs. Length of Wire Set the current at 3.0 A. This time, you will vary the length of the wire that is in the B-field. Make sure the scale still reads 0 with the magnet on it. Board Number Wire Length (m) Scale Reading (kg) Force (9.8 m/s x Scale Readin SF 40 SF 37 SF 39 SF 38 SF 41 SF 42 012 022 032 042 064 084 S) When the length doubles from 4.2 cm to 8.4 cm, does the force on the magnet double? Is this what you would expect? Explain in terms of Equation (1). Yes, it will double the fovce or the nage net. Force vs. Number of Magnets For this part, set a current of 2.0 A and use the \"SF 40\" wire (1.2 cm). You can remove individual magnets from the assembly of magnets. Start with one and add a magnet one at a time. Keep the magnets in the middle of the assembly. Each time you change the number of magnets, re-zero the scale. Number of Magnets Force (-9.8 m/s2 x Scale Reading) Scale Reading (kg) it

Solution

7) The strength of the magnetic field is directly proportional to the number of magnets and the data approximately shows this within permitted experimental errors.

Conclusion:

1) The scale is set to zero when the magnets are placed on it. When varying lengths of the current carrying wire are brought in the magnetic field of the magnets, the magnets experience a force and the scale is calibrated such that it calculates the force in terms of gravitational force a mass will experience in earth\'s gravitational field.

2) The force experienced by the magnets is equal and opposite to the force experienced by the current carrying wire and so, the scale reading is also equal to the force experienced by wire in the terms mentioned above.