Is embedding the induction simulator free?

Yes. It is free to embed on any site, with no account, no API key and no usage limits. The whole simulation runs in your visitor’s own browser, so there is no server cost — we only ask that you keep the small "Electromagnetic Induction Simulator by LK Forge" credit line that comes with the embed code.

What can visitors do with the embedded simulator?

They can set how fast a bar magnet oscillates through a coil, how many turns the coil has, and how strong the magnet is, then watch the galvanometer needle swing as a current is induced. A live panel shows the induced EMF, the flux through the coil, the current direction and the peak voltage, all responding as the magnet moves.

Does the embed teach Faraday's and Lenz's laws?

Yes. The EMF is computed from Faraday's law as minus N times the rate the flux changes, so students see the voltage peak where the magnet moves fastest through the coil and fall to zero at the centre and the turning points. The needle reversing as the magnet enters and leaves is Lenz's law — the induced current always opposing the change — made visible.

What iframe height should I use, especially on mobile?

The snippet ships with height="900", which is tall enough that the coil animation, the galvanometer, the sliders and the readouts all fit without clipping even on a narrow phone where everything stacks into a single column. On a wider page the widget simply centres within its max-width of 560px. If you want it shorter you can lower the height, but 900 is the safe default across screen sizes.

Where can I embed it — WordPress, Wix, Squarespace, Notion?

Anywhere you can add HTML, because it is a standard iframe. In WordPress use a Custom HTML block; in Squarespace a Code/Embed block; in Wix an Embed HTML element; in Ghost an HTML card; in Notion paste the /embed/electromagnetic-induction/ URL as an embed. On a plain HTML page or an intranet, paste the snippet straight into the markup.

Does the embedded simulator track visitors or set cookies?

No. Everything runs locally in the visitor’s browser — nothing is uploaded. The embed sets no tracking cookies and sends no analytics, so it is safe to place on a privacy-sensitive site, an intranet, or a page for students.

Widgets

How to Add an Electromagnetic Induction Simulator to Your Website

LK Forge · 4 min read · Updated September 2026

You can add a full electromagnetic induction simulator to any website, blog, or classroom page with a single line of code — free, with no sign-up, no plugin, and no script to install. Visitors sweep a magnet through a coil and watch a current appear from motion alone. This guide covers the fastest way to embed the Electromagnetic Induction Simulator, what it teaches, and where it works.

The quickest way: paste one embed snippet

An embed is just an <iframe> that loads the simulator from lkforge.com, plus a small credit line. Copy this into your page’s HTML where you want the widget to appear:

<iframe src="https://lkforge.com/embed/electromagnetic-induction/"
        width="100%" height="900" loading="lazy"
        style="border:0;max-width:560px"
        title="Electromagnetic Induction Simulator by LK Forge"></iframe>
<p><a href="https://lkforge.com/tools/physics/electromagnetic-induction/">Electromagnetic Induction Simulator</a>
   by <a href="https://lkforge.com/">LK Forge</a></p>

The <iframe> is the live simulator; the <p> underneath is a plain credit link. Keep that line — the visible link is what keeps the widget free to embed. You can also copy this exact code straight from the LK Forge widget gallery.

What the widget shows

The simulator opens with the magnet already moving, so a visitor sees the needle swing immediately and can then take control:

Magnet speed: move the magnet faster to change the flux more quickly and drive a bigger voltage.
Coil turns: more turns multiply the induced EMF.
Magnet strength: a stronger magnet means more flux and a larger swing.
Live readouts: the induced EMF, the flux, the current direction and the peak voltage — with the needle reversing as the magnet passes through.

Pick the right height

The snippet uses height="900", which fits the coil, the galvanometer, the sliders and the readouts without clipping even on a narrow phone, where they stack into one column. On a wider page the widget centres within its max-width:560px. That single height works across screen sizes, so there is nothing to tweak for mobile.

Where it works

Because it is a standard iframe, the embed works anywhere you can add HTML:

WordPress: add a Custom HTML block and paste the snippet.
Squarespace: use a Code / Embed block.
Wix: add an Embed HTML / iframe element.
Ghost: insert an HTML card.
Notion: paste the /embed/electromagnetic-induction/ URL and choose "Create embed".
Plain HTML, an intranet, or a lesson page: paste the snippet straight into the markup.

That’s the whole job. Copy the embed code from the widget gallery and paste it wherever a physics lesson or a blog post on electromagnetism, generators or Faraday's law needs a magnet students can actually move.

Grab the embed code from the LK Forge widget gallery — free, no sign-up.

Open the Electromagnetic Induction Simulator

Frequently asked questions

Is embedding the induction simulator free?: Yes. It is free to embed on any site, with no account, no API key and no usage limits. The whole simulation runs in your visitor’s own browser, so there is no server cost — we only ask that you keep the small "Electromagnetic Induction Simulator by LK Forge" credit line that comes with the embed code.
What can visitors do with the embedded simulator?: They can set how fast a bar magnet oscillates through a coil, how many turns the coil has, and how strong the magnet is, then watch the galvanometer needle swing as a current is induced. A live panel shows the induced EMF, the flux through the coil, the current direction and the peak voltage, all responding as the magnet moves.
Does the embed teach Faraday's and Lenz's laws?: Yes. The EMF is computed from Faraday's law as minus N times the rate the flux changes, so students see the voltage peak where the magnet moves fastest through the coil and fall to zero at the centre and the turning points. The needle reversing as the magnet enters and leaves is Lenz's law — the induced current always opposing the change — made visible.
What iframe height should I use, especially on mobile?: The snippet ships with height="900", which is tall enough that the coil animation, the galvanometer, the sliders and the readouts all fit without clipping even on a narrow phone where everything stacks into a single column. On a wider page the widget simply centres within its max-width of 560px. If you want it shorter you can lower the height, but 900 is the safe default across screen sizes.
Where can I embed it — WordPress, Wix, Squarespace, Notion?: Anywhere you can add HTML, because it is a standard iframe. In WordPress use a Custom HTML block; in Squarespace a Code/Embed block; in Wix an Embed HTML element; in Ghost an HTML card; in Notion paste the /embed/electromagnetic-induction/ URL as an embed. On a plain HTML page or an intranet, paste the snippet straight into the markup.
Does the embedded simulator track visitors or set cookies?: No. Everything runs locally in the visitor’s browser — nothing is uploaded. The embed sets no tracking cookies and sends no analytics, so it is safe to place on a privacy-sensitive site, an intranet, or a page for students.