Note that this magnetic field opposes the original change. For example, if a magnet is moved into a coil of wire, the induced magnetic field tends to repel the magnet back out of the coil.

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.

A permanent magnet changes the flux through coil, generating a voltage that can be read by an analog voltmeter (you can pretend it's a galvanometer). Connect the voltmeter to the coil or to the DAQ ...

Since the cook surface uses magnetic ... a homemade induction stove well within reach of anyone with an appropriate power supply and enough wire and inductors to build the coils.

"You can lay down a fillet of salmon, a New York steak, or a chicken breast and set a time and temperature and walk away." Experts reveal how one kitchen appliance is changing the way people cook: ...