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Magnetic Induction Lab

Magnetic Induction Lab

 

Purpose:   The purpose of this lab is to get an understanding of how magnetism can be used to create a flow of electrons in a circuit.

 

Info: 

  • Induction means to induce the electrons to move through a circuit using a magnetic field.

  • The magnetic field is given by the letter B and it is measured in Tesla. 

Part 1: Horizontal Movement

  • Open the magnetic induction program found here.
     
  • Click on "Move Horizontal" and watch the light carefully as the coil of wires moves from left to right.  The light should go on twice and off twice.  Tell exactly what was happening with the coil when the light was on and when it was off.  If you let the light move far enough to the right, it will travel, PacMan like, to the far left again.
     
  • Allow the light to move through a second time, but this time view the movement of the coil from above instead of from the side.
     
  • When the coil returns to the far left again.  Hit stop.  Hit the rotate button and allow the coil to rotate 90° and then stop its rotation.  If you are viewing from above you should see your coil as almost a perfectly thin line and if you are viewing from the side, your coil should look like a full circle.



  • Now hit move horizontal again and watch as the coil move through the field.  What is different about the light as the coil move through in this orientation?

Part 2: Vertical Movement

  • Move your coil into the magnetic field, but keep the light out of the magnet field as shown in the picture below.  So stop your system when it looks similar to the picture shown below.


  • Change your perspective to a side view.



  • Move the coil vertically and tell what happens with the light as the coil moves.

  • Move the coil horizontally until all the coil is out of the magnetic field.  Stop the motion of the coil.  Rotate the coil another 90° so that it is now viewed edge on when in viewing from the side.

  • Move the coil horizontally and then stop it when most of the coil is in the magnetic field but the light is not.  It should like like the picture shown below.




  • Once again move the coil vertically and see what happens with the light as it moves.

Part 3: Rotation

  • Stop the coil in the location and orientation shown below.


  • Start the coil rotating and allow it to make at least one complete rotation.  Tell about the light during this rotation.

  • Remove the coil from the field totally and allow it to rotate again.  Tell about the light during this rotation.

Part 4: Changing B Field

  • Stop the coil in the location and orientation shown below.


  • Click on Vary B and describe the light at this time.

  • Stop B from Varying and then click on flip magnet a few times.  Describe the light at this time.

  • Rotate the coils to look like the picture below.



  • Click on Vary B and describe the light at this time.

  • Stop B from Varying and then click on flip magnet a few times.  Describe the light at this time.

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