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.
-  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.
- If it's a small class, pass around the demo.
- PIRA 5B20.XX
- Don't attempt this at home!
- Original construction: 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 0.75" 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.