Eddy currents and magnetic braking
A magnet drops through a copper tube, a pendulum plate swings between poles, or a disc is braked: induced eddy currents oppose the motion, heating the metal; slots in the plate reduce the effect.
About this experiment
| Subject | Physics |
|---|---|
| Class | 12 |
| Chapter | 6. Electromagnetic Induction |
| NCERT section | 6.7 |
| Level | NCERT level |
| Time | about 12 minutes |
| Access | Included in a PractiSci plan |
What you do in the lab
Change the controls and watch the physics behave in real time in 3D. Live readouts and graphs show the numbers behind it, and the Learn tab has the theory, procedure, observations and viva questions. Works on a phone or a laptop, in English and Hindi.
Topics: eddy currents · magnetic braking · Lenz's law · damping · induction
More from this chapter
- AC generator
- Faraday's experiments and Lenz's law
- Lenz's law: a magnet falling through a coil
- LR circuit: current growth, decay and back emf
- Motional emf on a rod in magnetic field
- RC circuit: charging, discharging and time constant
- EMF of a rotating rod and a Faraday disc
- Self and mutual inductance, L-R growth