Experiment 6 Mark Sawh

# Experiment 6 Mark Sawh - Experiment 6 Part 1 Induction:...

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Experiment 6 Part 1 – Induction: Magnet Through a Coil Part 2 – Transformer Mark Sawh Date Preformed- 10-06-09 Date Due- 10-13-09

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Part 1 – Induction: Magnet Through a Coil Purpose To measure the electromotive force (emf) induced in a coil by a magnet dropping through the center of the coil. Theory When a magnet is passing through a coil there is a changing in magnetic flux through the coil, which indices an electromotive force (emf) in the coil. According to Faraday’s law of induction: =- ε N ∆ ∆ ∅ t o Where ε is the induced emf, N is the number of turns of wire in the coil, and ∆ ∆ ∅ t is the rate of change of the magnetic flux through each turn of the coil. When the magnet is entering the coil the magnetic flux through the coil increases with time. When the magnet Is leaving the coil the magnetic flux through the coil decreases with time. The incoming and outgoing peaks can be displayed as either positive or negative peaks depending on the connections of the voltage probes to the coil. In the experiment, the voltage sensor will measure the voltage (emf) induced by a magnet dropping through the center of a coil. The area can be calculated under the incoming and outgoing peaks, and represents the change in total flux through the coil. Results and Analysis 1. The spectra in Data Sets 1 and 2, or 3 and 4 show that the incoming and outgoing peaks are opposite in direction. Why? The spectra shows the data sets 1 and 2, or 3 and 4 incoming and outgoing peaks are opposite in direction, is due to the pole that enter through the photogate first. If the north
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## This note was uploaded on 09/03/2011 for the course PHY 2049L taught by Professor Chen during the Spring '11 term at FAU.

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Experiment 6 Mark Sawh - Experiment 6 Part 1 Induction:...

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