Preview - Netlogo Investigations In Electromagnetism (Niels)

Testing Prediction of Wire Length


Use the model below to test your prediction about how wire length affects current.

When you were examining wire width, you compared data with other classmates to come up with a more accurate measurement representing current. Now you can use the modeling tool below to run multiple trials and aggregate your own data.

With your classmates, you found averages by conducting multiple trials and averaging the data collected across trials. Now, you'll be introduced to a tool that allows you to calculate a running average that will average all the measurements for current within one trial. To find that the average current within an individual trial, you can average all the individual current now measurements that you take.

In the workspace below is the model, now with an empty table and empty graph. As you run your model, the table will automatically update data from the model at each tick. Each time you press setup, you will begin a new “run” or trial of data collection. You can graph these data by pulling the variable headers from the table into an axis of the graph. You can also calculate specific information about the data by updating the table with formulas. 

There are instructions on using the data table and graphing tools are embedded in the model's instruction window. You can move this window by dragging it's blue headers and also resize it by dragging any side of it. If you close the instructions, click the GUIDE button that looks like a book in the upper right-hand corner and select "Show Guide". 


Questions

Please answer the questions below.

What is the relationship between wire length and current?


Upload a photo of the graph that supports these findings. To do this, click on the graph in the workspace above. When the teal option bar pops up, click on the camera at the bottom and save the image as a local file. Then, click use the file finder below to attach the image to this page. You can upload more than one graph that support your findings.

Upload files that are less than 5MB in size.
File Delete

Explain the graph(s) uploaded above support your findings.


How did you generate data to determine the relationship? Justify the process you used. Hint: Consider how many trials you conducted, how long you let each trial run (ticks), and what parameters you changed between trials.


What size of wire widths and lengths provide the highest current? What sizes provide the lowest current?


Compare the data collection process from discovering the impact of wire width and of wire length. What was the difference between the first and second explorations? How did computational tools help you to determine the relationship between these parameters (wire width's and wire length's affect on current)?


Please wait for teacher instruction before moving on 

Note: Draw your sketch in the sketchpad below

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.