Goal: a Learn how Faraday's Law explains how induced current is created, and to research applications of this process to how our electric grid works. Type your answers directly into this document. Please highlight everything you type into this report or any modications you make in the document. There are no exceptions to this. Highlight what you did so that your instructor can easily nd your answers. This lab uses the Faraday's Law simulation from m Interactive Simulations at University of Colorado Boulder. You should see a coil of wire (with 4 loops), a magnet, a light bulb, and a voltmeter. Activity 1 Pushing a Magnet into a Coil (15 points) 1. Move the magnet so that it enters the right side of the coil with its North pole entering the loop. Inside the coil, what is the direction of the original magnetic eld and the induced magnetic eld due to the induced current? Explain why. 2. Note down your observations regarding the induced voltage in the voltmeter (positive or negative) and the lighting of the bulb when: a. The magnet is pushed into the right side of the coil. b. The magnet stops in the coil. c. The magnet is pulled out of the right side of the coil. 3. When you pull the magnet out of the right side of the coil, what direction does the induced magnetic eld inside the coil point? Explain why. 4. Now push the magnet very slowly into the right side of the coil. What differences do you note about the voltmeter and the lighting of the bulb compared with the previous experiment? Activity 2 Switching Polarity and Magnet's Motion (10 points) 5. Click on the magnet button at the bottom to ip the polarity of the magnet. 6. Move the magnet so that it enters the right side of the coil with its South pole entering the loop. Inside the coil, what is the direction of the original magnetic eld and the induced magnetic eld due to the induced current? Explain why. 7. Note down your observations regarding the induced voltage in the voltmeter (positive or negative) and the lighting of the bulb when: a. The magnet is pushed into the right side of the coil. b. The magnet stops in the coil. 0. The magnet is pulled out of the right side of the coil. 8. What is different about pushing the south pole into the coil compared to pushing the north pole? Explain why this difference happens. With the magnet completely inside the coil, move it up and down, but do not let it touch the coils. Be careful that you o_nly move it up and down. What happens to the light bulb and voltmeter? What is different compared to the previous experiments? Explain why it is different. Activity 3 Real World Application (15 points) 10. 11. 12. 13. 14. 15. 16. Now put the magnet directly into the loop. Rapidly click on the magnet button at the bottom so that the polarity ips back and forth while it is in the coil. Describe what you see happen. What type of current are you producing? Faraday's Law plays a vital role in how we generate electricity. Most of it comes from the generation of steam in some way. Other methods include the movement of water or wind. There are other ways that don't involve electromagnetic induction (such as solar). Research one of these methods that use electromagnetic induction. a. Steam (coal, natural gas, nuclear, geothermal, etc....) b. Wind c. Water You may want to search for how windmills, dams, nuclear power plants, or other methods work. How is the motion generated? How is the motion converted to electricity? What does it look like inside where the electricity is being generated? What does the actual device look like that converts the motion to electricity? Write a description answering the questions asked in (15) and provide an explanation for how the process works. Include pictures and explain what the pictures are showing. You don't need to write a research paper. Just get right to the point in a paragraph or two. Also, you are required to post the results of your research (Questions 13-16) as a post in the discussion board. Then respond to at least two of your classmates' posts where you discuss various advantages and disadvantages of the method