{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Lab 223 FaradaysLaw - Helmholt z Coil Current(mA...

This preview shows page 1. Sign up to view the full content.

Ryan Johnson PHYS 121A Lab 223: Faraday’s Law Objective : In this experiment, the voltage induced in a coil by a changing magnetic filed is measured and compared with the predictions of Faraday's Law. The source of the magnetic field will be a pair of Helmholz coils. Data: Conclusion: Although some of the results of theoretical and experimental seem to closely match, there is a huge error in the 400 and 100 Hz and a slightly less though still large error in the 200Hz measurement. This could have been caused by several different problems. First, the human error involved. We could have been measuring something else incorrectly, therefore the theoretical equation is off. Also, a machine could be off, producing or reading something different than it actually states.
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Helmholt z Coil Current (mA) Frequency (Hz) Magnetic Field Bo from curve fit (mT) Theoretical peak EMF computed from equation (1) Experimental value of peak coil EMF measured by the computer RMS coil voltage from multimeter Computed peak coil from RMS Value 0.036 800 0.056 221.7060638 223.297 7.61 157.89482 0.15 400 0.048 95.01688446 148.81 7.62 105.22456 0.15 200 0.072 71.26266335 96.114 7.62 67.962861 0.15 100 0.043 21.27982308 84.899 7.62 60.032659 0.15 50 0.082 20.29006387 17.984 7.61 12.716608 N 700 Outside D 4.87 A 0.001125179 Inside D 2.7 Avg D 3.785 Avg R 1.8925 Avg R in m 0.018925...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern