# Lab 8 - 5. We set the probe range to X100 and multimeter on...

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Lab 8 Part A 1. We connected the solenoid coil to the D.C power supply. 2. We turned on the power supply and adjusted the volts to 10. 3. We brought the cylindrical magnet the coil and we saw that one side of the magnet was attracted to the top of the coil while the other was repelled. 4. We found that the solenoid always attracts the metal core and thus assume that the metal core does not have a north or south poll. Part B 1. We used the magnaprobe to examine the field lines near the cylindrical magnet. 2. We used a compass to help trace some of the field lines of the magnet. See Sketch A Part D 1. We connect the D.C. power supply to the coil with test leads, and set the current to 1amp. 2. We used a compass to verify that the field lines encircle the wires of the coil. See Sketch B 3. With the meter stick aligned with the coil axis we place the meter stick zero at the coils center. 4. We used the Hall probe to measure the field along the axis.

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Unformatted text preview: 5. We set the probe range to X100 and multimeter on 200mV. 6. We took reading along the meter stick with the Hall prob. 0cm .212V 5cm 123mV 7cm 76.3mV 10cm 34mV 12cm 21.8mV 15cm 12.5mV 20cm 6.3mV 25cm 3.9mV Part E 1. We observed that if the current is traveling clockwise the field lines start off going down. 3. From part B(2) the field lines could make closed loops if continued through the magnet. 3. B at the center of the coil should be.0023488T Cm T .05 2.8(10^-6) .1 3.6(10^-7) .15 1.1(10-7) .2 4.5(10-8) .25 2.3(10^-8) .3 1.3(10^-8) .35 8.4(10^-9) .4 5.6(10^-9) .45 3.9(10^-9) .5 2.9(10-9) Conclusion It appears that magnetic field get weaker the further away from the source of you get, and that magnetic field lines leave the magnet in perpendicular lines to the flow of the current through a magnet....
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## This note was uploaded on 06/02/2008 for the course PHYS 208 taught by Professor Ross during the Spring '08 term at Texas A&M.

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Lab 8 - 5. We set the probe range to X100 and multimeter on...

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