Lab 21

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Name ___Erica C. Savage__________________ Faraday Induction – Lab 21

Go to http://www.colorado.edu/physics/phet/simulations/faraday/faraday.jnlp and click on Run Now.

Directions 1. Screen 1
Screen 1
Getting started. Open the website listed above and on the top of the screen select the tab marked Pickup Coil. 2. Make observations & draw conclusions. Add a field meter to the default screen and drag that field meter so it measures the magnetic field in the middle of the pickup coil. Your screen should look something like what you see to the right, on Screen 1. When the light bulb lights up it indicates the electricity has been generated. Grab the magnet and move it around and observe what happens to the strength of the magnetic field and to the light bulb. Based on your observations what conditions must happen for electricity to be generated.
Answer: Observations-As the magnetic field is moved from the bottom of the coil and moves around the coil from left to the top and then the right, the strength of the magnetic field increased; therefore, it can be concluded that the strength of the magnetic field affects the amount of electricity generated. 3. Make observations & draw conclusions. Move the magnet back and forth, fast and then slow. What general rule can you make about the speed of the magnet and electrical generation?
Answer: Observations- Flux is proportional to the field strength. It depends on the rate of change of the magnetic field, moving the magnet quickly will result in a higher generation of electricity. 4. Make observations & draw conclusions. Leave the magnet in just one place and using the button on the right control panel of the applet, flip the polarity of the magnet. Flip the polarity of the magnet fast then slow and observe the amount of electricity that is generated. What general rule can you make about…...

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