5B20.XX Flux Model
Electric/magnetic flux through a closed loop as a function of angle
The model shows how the flux ('number' of field lines) through a closed loop changes as the angle between the field lines and the loop changes. The relation between flux and angle may be quantitatively determined if desired. Note: this demonstration can be passed around a small classroom.
-  Flux model made from a 10 x 10 grid of nails
-  Square wire loop
- Place the loop on the nail grid at a variety of angles to show that the number of field lines (nails) through the loop changes with angle.
- PIRA 5B20.XX
- Don't attempt this at home!
- The 'field lines' were made from 3.5" bright finishing nails hammered into a predrilled 10 x 10 grid with a .2125" spacing.
- The base of the nail 'field line' model is a block of 3.5" x 3.5" x .75" wood.
- The square wire loop was made from 16 gauge copper wire wound in a single turn around the nail grid to form an approximately 2.5" x 2.5" square loop.
- The loop was soldered closed for robustness.
If you have any questions about the demos or notes you would like to add to this page, contact Ricky Chu at ricky_chu AT sfu DOT ca.