As you may recall from Physics 101, a changing magnetic field (like when you slide a bar magnet through a copper coil) induces an electric current. At planetary scale, Earth’s magnetic field induces ...

But when he shows the ends of the core, you’ll see that the side that attracts aluminum has a copper ring embedded in it. The coil is fed with AC. The magnetic field from the coil induces an ...

Did you know that you can request a loaner induction cooktop for a two-week trial period through PG&E? Joyce Mercado explores ...

That's an electrical current that forms in the copper, in response to the moving magnetic field of the falling neodymium magnet. That eddy current produces a magnetic field of its own. The two ...

A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.

The idea is simple yet intriguing, using a copper coil, capacitors, and a mechanical timing mechanism, a coil gun is built with minimal complexity. Unlike many traditional designs that require large, ...

One thing we’d suggest is switching from a disc to a cylinder with magnets placed in a Halbach array to direct as much of the magnetic field into the interior as possible, with coils of copper ...

you’ll find a coil of copper wire. When you plug it in, the electric current passing through this coil generates a magnetic field. Meanwhile, phones that support wireless charging include a coil ...