Solenidu magnetic field with the flow


This experiment demonstrates the magnetic field coil with a long stream - solenoid.

Educational phase: motivation


Required aids+

  • Model solenoid
  • metal filings
  • battery
  • switch
  • connecting wires.


Experiment instructions+

E117_S001 We will engage the model through the solenoid switch to the battery.
E117_S002 Switch closes and we begin to model strewing metal filings.
E117_S003 Begin to discover the magnetic induction lines.
E117_S004 After sprinkling the entire model can be observed magnetic field inside the solenoid.


The coil wire is twisted into threads. Magnetic fields from individual coils are made and inside the coil creates a magnetic field that is homogeneous and has a coil axis direction. The field is homogeneous the better the coil is longer.

Experiment video+

Nemáte povolen JavaScript, avšak pro správný běh stránky je nezbytný.
You do not have JavaScript enabled, but for proper function of website is neccessary.
Máte příliš zastaralý prohlížeč pro přehrání videoukázek
nebo nemáte nainstalován Adobe Flash player !

You have too outdated browser to play video clips
or you do not have Adobe Flash player installed !

Physical interpretation+

The direction of magnetic field lines thread or coil is determined Ampérovým right-hand rule: We take a coil in the hand so that the bent fingers pointing direction of the current in the coil. Deflected the thumb indicates the direction of field lines inside the spool.

This experiment demonstrates the magnetic field coil with a long stream - solenoid.
Download as HDV videoclip | Download experiment card | Insert to own website |

This experiment has been added 14.4.2012 by Jan Krejčí and since then have 9280 visits.
3.6.2014 21:44 © Krejčí Jan