Pre Lab
In our previous lab on Magnetism we found that a current in a wire can induce a magnetic field following the right hand rule like in the picture below.
Faraday's Law describes how we can go the other way, inducing a current by changing the magnetic field. Faraday found that a changing magnetic field will induce an EMF in a loop of wire. Changing the area or angle of the loop will also induce an EMF.
What this means is that as I change the density of the magnetic field lines passing through a certain surface area, I can create an electric current. Recall that the density of field line passing through a surface area is also called flux. So changing magnetic flux will induce current. Electric generators and computer hard drives apply Faraday's law. In the lab this week we will 1) explore this principle in theory for current in a loop of wire, 2) conduct a video analysis, and 3) complete a virtual lab using a Phet Simulation. Prior to lab please complete the following:
|
A few videos about Faraday's Law
|
Also, here are a few videos on vector multiplication (dot and cross products):
|
|
Pre Lab Video
Simulation
Explore the simulation embedded at the following link to explore Faraday's Law.
Simulation: https://phet.colorado.edu/sims/html/faradays-law/latest/faradays-law_en.html
You may use the simulation to answer the pre lab quiz questions as well.
Pre-Lab Quiz is available at the course Blackboard website
Simulation: https://phet.colorado.edu/sims/html/faradays-law/latest/faradays-law_en.html
You may use the simulation to answer the pre lab quiz questions as well.
Pre-Lab Quiz is available at the course Blackboard website
Lab
This week you will be completing the Multiplying Vectors Lab (pg 53) and doing the Faraday's Law lab (pg. 61) found your lab manual.
We will be using Logger Pro and a Phet simulation to complete this lab.
We will be using Logger Pro and a Phet simulation to complete this lab.
Post Lab
Please post a reflection on the lab experience on the Faraday's Law Lab Reflection discussion board on the course Blackboard site.
Be sure to include:
Be sure to include:
- What you did
- Why you did it
- Any interesting observations
- What you learned from doing the lab