What causes a current to be induced?

posted Feb 16, 2018, 1:05 PM by Barbara Fortunato   [ updated Feb 16, 2018, 1:08 PM ]
2: T 2/20 lab, 4: W 2/21 lab

Today, after a daily quiz, we will start a guided inquiry project to study variables that cause induction.

1.  Open the Faraday's Electromagnet Lab simulation (http://phet.colorado.edu/en/simulation/faraday).  Using the window called Pickup Coil investigate what you can about induction.  Make a list of variables that affect the amount and direction of the induced current.  Qualitatively describe how these variables affect the amount and direction of the induced current.


2.  Using this information, experimentally create a wire configuration with 1 meter of wire that induces the most current.  Collect data, make observations, and improve your design as necessary until you feel that you have created an optimal design.


3.   Imagine that you are presenting your experimental results and design at a conference session titled:  New Technology for Electricity Generation. Prepare a short 15 minute presentation that includes the following:  your group's motivation for studying this topic, your qualitative observations, how you used these observations to establish your experimental design, and how you think this can be applied on a larger scale to generate electricity.  Your presentation will be graded by the criteria listed on the attached rubric.

Homework:  Watch the following video on Faraday's Law of electromagnetic induction.  Only the first 20 minutes are required.  The rest is up to you.  You may be asked to do similar things to the last 7 minutes on the exam, so you should either watch it, flip though it to get the main idea, or watch it later before your test.  

Faraday's Law of Induction

Also finish your Induction presentations.  They should be no more than 10-15 minutes, and can be a lot shorter if you want.  You must talk about your observations from the applet and then talk about how you used these observations to design your current generator.  Finally, give evidence of your results.