Electrophorus Build It Activity To be completed in your lab notebook Pre Lab:   

On a fresh piece of paper in your lab notebook write today’s date and the title of the lab. Don’t forget to continue the page numbers in your lab notebook. Don’t forget to add this lab and its page number to your Table of Contents.

Purpose: You are to create an electrophorus, pictured below, out of available materials in order to light a small neon bulb. Neon bulbs can be lit with a very small amount of current, like the amount produced by a static shock. Your goal is to optimize your electrophorus to make as bright of a light as possible. Materials Styrofoam sheets Sheets of wool/ flannel Styrofoam plates Styrofoam cups Plastic cups Plastic plates Paper plates Paper cups Aluminum plate Aluminum cup Cellophane tape Procedure 1. Use these materials to develop an electrophorus which is a plate with a handle made from a cup. You will determine which material is used to achieve your goal. 2. To create a static charge, use the cloth provided and rub the styrofoam sheet vigorously. 3. Touch the electrophorus to the styrofoam sheet to charge it then hold it by the cup above the table top. 4. Hold one lead of your neon bulb and touch the other to the plate and see if it lights up. 5. Once the bulb can be lit, try to optimize your electrophorus by changing your materials or technique. Keep experimenting with different combinations. 6. Keep some record of the materials you used for each piece, the result and how that influenced your design.

Please be careful in creating and redesigning your Electrophorus so that as many of the materials can be reused as possible. Conclusion In an age appropriate paragraph explain (1) how the bulb can be lit this way and (2) justify your design choices and how well it worked. Be sure to discuss each of your designs and how their results influences later designs.

NB Electrophorus Build It Activity.pdf

bright of a light as possible. Materials. Styrofoam sheets. Sheets of wool/ flannel. Styrofoam plates. Styrofoam cups. Plastic cups. Plastic plates. Paper plates.

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