Lab 4_Group_3_Terpsichore_Lindeman_Tuoxin_CaovF

Lab 4_Group_3_Terpsichore_Lindeman_Tuoxin_CaovF -...

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Unformatted text preview: Electricity From Motion Induced Electromotive Force Terpsichore Lindeman – Tuoxin Cao 7/15/2009 Electricity From Motion | 7/15/2009 Figure Figure Figure Figure Figure xB=μ0j(r) Figure Figure Figure -1.9 -2.0 -3.0 Experiment #:4 Date performed: Wednesday, July 08, 2009 Date due: Wednesday, July 15, 2009 Electricity From Motion Principal investigator: Tuoxin Cao Skeptic & Researcher: Terpsichore Lindeman TA Zheng Zhu, Kreswell Neely Role I DC AD RC Q1 Q2 PI PG I introduction DC data and calculation AD analysis and discussion RC results and conclusion Q1/Q2 quiz/prelab PI principal investigator points PG personal grade T ABLE OF C ONTENTS E LECTRICITY F ROM M OTION Induced Electromotive Force I NTRODUCTION This laboratory experiment was executed by Tuoxin Cao, and Terpsichore Lindeman on July 8, 2009. This experiment was a three part experiment in which B-fields were examined of closed loops and the induced currents of the closed loops that were being examined. Changing the induced B-field of a closed loop was examined and that in turn with effect to its induced current direction and magnitude in both Parts A and Part B of the experiment. In part C of the experiment the magnitude of a B-field for a bar magnet, an electromagnet and an enhanced electromagnet were examined in relation strength of these fields calculated at a distance. This laboratory report was collated and discussed every day since the execution of the experiment online via office live once again, and two face to face meetings to correct errors of data plotting as it was plotted in wrong decimals causing alterations to our data which was indeed figured out in the end! From reading we know that Kirchhoff’s Law states that indeed in a closed loop that the total voltage must be zero, though according to Faraday’s law this is true and an exception as Kirchhoff’s Law is ONLY referring to a conservative field. Though Faraday’s Law is a supreme law and is true for both non-conservative and conservative fields! Thus it is mandatory it be noted that non-conservative fields are what we are examining in this experiment. Throughout this laboratory exercise we will be revisiting previous theories, such as Coulomb’s Law, Ohm’s Law in conjunction and with special focus and examination of Faraday’s Law and how it corresponds with Lenz’ Law. For the first two parts of this laboratory exercise we will be examining the emf, the electromotive force, created in a closed loop. For the first two parts of the experiment, the magnetic flux is altered manually and observance of the induced current and B field are examined. One must be able to identify that an emf is created when the magnetic flux through the circuit changes. This emf has a direction that opposed the change in the flux,Φ . In other words emf tries to maintain flux constant. This is what Faraday’s Law states shown as =- emf dΦBdt Elaborating on what dΦB is and how it relates to time the law is saying that, if you change the...
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This note was uploaded on 08/25/2009 for the course PHY 213 taught by Professor Cao during the Summer '08 term at Kentucky.

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Lab 4_Group_3_Terpsichore_Lindeman_Tuoxin_CaovF -...

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