7m speed100mph447ms 2 5 ifiamflyingitatapointon

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Unformatted text preview: uced across it given by this equation. 2 4 Example: My airplane Luscombe 8E Built 1947 Wingspan 22 feet = 6.7m Speed 100 mph = 44.7 m/s 2 5 If I am flying it at a point on earth where the vertical magnetic field is what is the voltage drop across the wings? 2 6 Book example (A more interesting problem): The small segment magnetic field . is moving in the 2 7 What we have learned So the contribution to the emf for the small segment is Angular velocity and velocity are related by 2 8 Add them up – integrate: 2 9 3 0 Consider a loop around a long solenoid. The current in the solenoid is increasing so the flux through the loop is increasing. 3 1 An emf is induced in the loop by Faraday’s Law Also from Chapter 23 we know the potential difference between two points is 3 2 If we integrate around the loop from the galvanometer back to the galvanometer in a counter‐clockwise direction we get the emf induced in the loop 3 3 But also Therefore One of Maxwell’s Equations. 3 4...
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