Motional emf on a rod in magnetic field
A conducting rod slides on rails in a magnetic field: emf ε = Blv, current I = ε/R, braking force B²l²v/R (Lenz), and energy balance between mechanical work and heat.
About this experiment
| Subject | Physics |
|---|---|
| Class | 12 |
| Chapter | 6. Electromagnetic Induction |
| NCERT section | 6.5 |
| 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: motional emf · Lenz's law · magnetic braking · rod on rails · induced current
More from this chapter
- AC generator
- Eddy currents and magnetic braking
- Faraday's experiments and Lenz's law
- Lenz's law: a magnet falling through a coil
- LR circuit: current growth, decay and back emf
- RC circuit: charging, discharging and time constant
- EMF of a rotating rod and a Faraday disc
- Self and mutual inductance, L-R growth