Magnet and Rotating Rings About a Pivot – HSC Physics


This is part of the HSC Physics course under the topic Electromagnetic Induction.

HSC Physics Syllabus

  • analyse qualitatively and quantitatively, with reference to energy transfers and transformations, examples of Faraday's Law and Lenz's Law `\varepsilon = -N (∆\phi)/(∆t)`, including but not limited to: (ACSPH081, ACSPH110)

– the generation of an electromotive force (emf) and evidence for Lenz's Law produced by the relative movement between a magnet, straight conductors, metal plates and solenoids

– the generation of an emf produced by the relative movement or changes in current in one solenoid in the vicinity of another solenoid

Investigating Electromagnetic Induction

The following video discusses the use a simple apparatus to demonstrate induction. A magnet is moved towards and away from two rings that can freely rotate about a pivot.