Lecture25 - Physics 42 Lecture 25 Announcements Lab on...

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Physics 42 March 10, 2006 Physics 42 Lecture 25 Announcements Lab on March 20: Electric guitar continued Quiz on this week’s material on March 22 Assignment 8 homework due on March 23 Today Farady’s law: some more examples Re-statement of Faraday’s Law as Maxwell’s 4th field equation Eddy currents Magnetic inductance
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Physics 42 March 10, 2006 Some more examples:
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Physics 42 March 10, 2006 Example 1 Pull a square wire loop (l x w) with constant velocity v through a magnetic field B as shown below. Find the emf generated in the coil versus position x.
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Physics 42 March 10, 2006 Example 1 The magnetic flux varies as follows: Using then the emf is:
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Physics 42 March 10, 2006 Example 2 Illustration of the generation of AC voltage with a coil (area A) rotating with constant angular velocity ω ο . (t) = A B ω ο sin ω ο t
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Physics 42 March 10, 2006 Example 2 Illustration of the generation of DC voltage using slip rings to half-wave rectify the voltage.
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Physics 42 March 10, 2006 Maxwell’s fourth field equation ε≡ r E d r l C = d Φ B dt
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Physics 42 March 10, 2006 Maxwell’s fourth field equation: Faraday’s Law A more general formulation of Faraday’s Law is in terms of
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This note was uploaded on 06/21/2011 for the course ECON 113 taught by Professor Dorsdan during the Spring '11 term at Waterloo.

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Lecture25 - Physics 42 Lecture 25 Announcements Lab on...

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