Explore the Faraday's Law & Generator Lab
Move a magnet through a coil to light a bulb, or spin the generator and watch the induced voltage. Free, no signup, runs in your browser.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
The Faraday's Law & Generator Lab with sample data entered and the result showing.
What is the Faraday's Law & Generator Lab?
Move a magnet through a coil to light a bulb, or spin the generator and watch the induced voltage. It runs in your browser, so a change to a setting or a drag on an object shows up at once.
Power stations, bicycle dynamos, wind turbines and wireless charging all use Faraday's law.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
A changing magnetic field through a coil induces a voltage.
Faster motion or a stronger magnet gives more voltage.
More turns give more voltage.
Drag the magnet slowly, then quickly.
Use 8 turns.
Switch to Spin generator and watch the AC graph.
Used for
Pick one to see how it fits.
Physics learners
Physics students in middle school, high school and first-year university, teachers who want a quick demonstration for the projector, and anyone revising for exams.
Try it freeTeachers
For teachers: project the Faraday's Law & Generator Lab on the board, let students predict the result, then run it together and test this: Use 8 turns. For students: change one thing at a time and write down what changes.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This simulation | Textbook diagram | |
|---|---|---|
| Interactive | Drag, tap and change settings | Fixed picture |
| Install | Nothing to install | Not needed |
| Cost | Free to use | Depends on the book |
Questions people ask
What is electromagnetic induction?
Producing a voltage in a conductor by changing the magnetic flux through it.
How does a generator work?
It moves magnets and coils relative to each other so the flux keeps changing and produces alternating current.
Is the Faraday's Law & Generator Lab free to use?
Yes. The Faraday's Law & Generator Lab is free, needs no signup or download and runs in your web browser. It is part of the Physics group of AZRS simulations.
Does the Faraday's Law & Generator Lab work on a phone or tablet?
Yes. The Faraday's Law & Generator Lab takes touch input as well as mouse input, so you can use its 3 adjustable settings with a finger. A larger screen makes the controls and graphs easier to read.
How do I use the Faraday's Law & Generator Lab?
1. In the Faraday's Law & Generator Lab, use the controls to change Coil turns, Magnet strength, Generator speed. The simulation reacts instantly. 2. In the Faraday's Law & Generator Lab, pick an option such as Drag the magnet, Spin generator to switch modes or load an example. 3. In the Faraday's Law & Generator Lab, press "Reset" to start, reset or change what is happening. 4. Start with this experiment: Drag the magnet slowly, then quickly. Drag any glowing handle, object or slider with your mouse or finger and the Faraday's Law & Generator Lab responds in real time. 5. Change one setting at a time and watch which readout moves, then compare it with this idea: A changing magnetic field through a coil induces a voltage.
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Try the Faraday's Law & Generator Lab now
Move a magnet through a coil to light a bulb, or spin the generator and watch the induced. Free to use.
Try it free