Physics Demo Number: 201

Approximate

Run Time: 5 min
Show the Magnetic Similarity of a Current-Carrying-Solenoid To a Bar Magnet

Demo Description

  Make use of  a  red and blue cylindrical magnet and an old 2400 turn solenoid to show attraction and repusion between the current carrying solenoid and  the bar magnet.

 

Scientific Principles

Current carrying solenoids have magnetic fields, which can be detected by interaction with permanent magnets.
    

Equipment

  1.  Solenoid.
  2.    Red and Blue  cylindrical magnet. 
  3.  Set -up pole in metal cube to let solenoid move  freely horizontally. The battery power supply is briefly held to the brass terminals on top of this cube.
  4. A second metal cube to house the cylindrical magnet.
  5. 9 volt batteries for powering the coil briefly.

 

Equipment Location

 All dedicated and self contained with the cubes.
Around the 7th column in the H Row (on the back right
wall).

Instructions


 The photo shows  a rough set up  of the components. One  needs only to rotate the top cube assembly 90 degrees counterclockwise (viewed from above) about a  vertical axis to be ready to do the demonstration as shown in the video.

 
 






Writeup created by David A. Burba
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