This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
demonstrations:5_electricity_and_magnetism:5k_electromagnetic_induction:magnets_through_copper_tube:start [2019/05/15 22:49] demoroom |
demonstrations:5_electricity_and_magnetism:5k_electromagnetic_induction:magnets_through_copper_tube:start [2020/01/07 19:52] demoroom |
||
---|---|---|---|
Line 1: | Line 1: | ||
====== Magnets Through Copper Tube ====== | ====== Magnets Through Copper Tube ====== | ||
- | {{tag> lenz's_law eddy_currents electricity_and_magnetism induction unlocated}} | + | {{tag> lenz eddy_currents electricity_and_magnetism induction unlocated}} |
<WRAP box right> | <WRAP box right> | ||
Line 11: | Line 11: | ||
===== Description ===== | ===== Description ===== | ||
- | Consists simply of a copper tube and a powerful cylindrical magnet with an outer diameter just a bit smaller than the inner diameter of the tube. | + | Consists simply of a copper tube and a powerful cylindrical magnet with an outer diameter just a bit smaller than the inner diameter of the tube. There are three copper tubes available in the demo room. Their lengths aren't exactly the same but are close to 50cm. |
+ | |||
+ | A smaller-diameter copper tube with a slit is also available, as well as a pair of aluminum tubes ((which work, but produce a smaller braking force because the conductivity of aluminum is lower)) and a long solenoid. ((which at first glance seems like it should work, but doesn't due to the way the induced currents cancel. If you can measure precisely enough, it may be possible to register a (very small) difference.)) | ||
===== Purpose ===== | ===== Purpose ===== | ||
- | Demonstrate the induction of [[wp<eddy current|eddy currents]]. Demonstrate induced current/ magnetic fields. Demonstrate Lenz's law/ Faraday's law. | + | Demonstrate the induction of [[wp>eddy current|eddy currents]]. Demonstrate induced current/ magnetic fields. Demonstrate Lenz's law/ Faraday's law. |
===== Apparatus ===== | ===== Apparatus ===== | ||
* Copper Tube (Optional: Multiple copper tubes, copper tube with slit) | * Copper Tube (Optional: Multiple copper tubes, copper tube with slit) | ||
- | * [demonstrations:5_electricity_and_magnetism:5g_magnetic_materials:magnets:start|1" Neodymium magnet]] | + | * [[demonstrations:5_electricity_and_magnetism:5g_magnetic_materials:magnets:start|1" Neodymium magnet]] |
===== Setup ===== | ===== Setup ===== |