The metal pieces follow the shape of the magnetic field. If you could see a magnetic field, this is what it would look like. Opposite magnetic poles are attracted to each other. This means the ...

The metal spoon will be magnetic if it is stainless steel but not magnetic if it is aluminum. The penny, nickel, and aluminum foil ball are not magnetic. Of all the materials in the world, only metals ...

The magnetic field from the coil induces an opposite field in the copper ring that is out of phase with the exciting field. The two fields combine to produce a force on the metal it interacts with.