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Unformatted text preview: Worksheet for Interactive Lab6 : Induction, Textbook page 733 Name Amer Mesallem___ Physics 216 /42 / /2006 The relation between magnetic and electric fields is subtle and powerful. During the nineteenth century, physicists were able to untangle the way in which changes in one type of field affected the other. Understanding how electric fields and currents can be induced though changes in the magnetic flux passing though a wire loop is a keystone in understanding electromagnetism. With this interactive, you can explore the phenomenon of induction for yourself. Short Answer Questions are worth 3 points each 1. (3 points) The graph on the top of the interactive shows voltage as a function of time. At what point in the loop's rotation does the voltage reach a peak? Explain why? It reaches its peak upon every time there is a loop 2. (3 points) You can use the Loop Radius slider to change the loop's radius. If you make the radius half as big, does the induced current also become half as big ( I = V/R) ? Why? Use 50 cm, 40cm, 30 cm, 20 cm, 10cm and record the voltage for each. Create a scatter plot of the data in Excel, and paste into this worksheet. What does the data suggest? The total emf E(t) = NBA sin( t). 50 = 2.467 V 40 = 1.579 V 30 = .888 V 20 = .345 V 10 = .099 V 3. (3 points) By default, the loop rotates automatically, as if connected to a motor. You can change the speed at which it rotates via the Rotation Speed slider bar. Try doubling the speed of rotation; does the induced voltage double as a result? Why? Use 50 cm, 40cm, 30 cm, 20 cm, 10cm and record the voltage for each. Create a scatter plot of the data in Excel, and paste into this worksheet. What does the data suggest? plot of the data in Excel, and paste into this worksheet....
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