This is alternating current or ac. The output of an alternator can ... increasing the rate of rotation increasing the strength of the magnetic field increasing the number of turns on the coil ...

When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet. The field inside a solenoid is strong and uniform. The small magnetic field caused by ...

The strip expands and contracts along with the sender’s magnetic field. When the sender’s pulse stops, the strip keeps vibrating for a tiny bit of time, emitting an AC magnetic field that’s ...