Electromagnetic Induction


Electromagnetic induction is the phenomenon that occurs in a changing magnetic field. Non-stationary magnetic field is the cause of non-stationary electric field.

Educational phase: fixation


Required aids+

  • coil from copper wire
  • ferrite or neodymium magnet
  • a multimeter (voltmeter)
  • two wires
  • crocodile clips.


Experiment instructions+

E098_S001 Connect the coil to the mutlimeter and on them set the DC voltage measurements in the mV.
E098_S002 When zoom in and then lay the magnet on the coil, deviation is observed on a voltmeter.
E098_S003 A magnet located on the coil does not move, so on the voltmeter we can not observe any deviation.
E098_S004 As you zoom out and then remove the magnet from the coil voltmeter, deviation is observed on a voltmeter, but with opposite polarity.


If the wires near the changing magnetic field, there is (is induced) on the ends of the closed-circuit voltage and current will pass. The size of the induced voltage at the ends of wires, such as a coil depends on the nature of changes in the magnetic field.

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 !
Download as HDV videoclip | Download experiment card | Insert to own website |

This experiment has been added 18.11.2011 by Jan Krejčí and since then have 12396 visits.
3.6.2014 21:44 © Krejčí Jan