Help! (please)
I have been struggling with a problem. I have searched and read extensively attempting to resolve it, but to no avail. I am hoping someone will be able to provide a good answer or at least point me in the right direction.
The problem is this.
In a Faraday generator, a disk made of a conductor spins in a magnetic field that runs parallel to the axis. slip rings or bushings create one electrical connection to the center of the disk and another connects to the outer diameter of the disk. With a multimeter attached at the contacts, when the disk reaches sufficient RPM, substantial amperage flows but relatively low voltage. The direction of flow is always such that the outside of the disk is negative and the inside is positive. If the direction of rotation is changed or if the magnetic field is reversed, the current still flows from the center to the outside of the disk. This hold true also when the disk is cut radially into segments.
If a single wire were rotated through a magnetic field with one end of the wire at the center of rotation and the other end at the widest path of the rotation, if a multimeter is attached, the direction of current changes is the magnetic field is reversed, or if the direction of rotation is reversed.
What is the critical difference between a wire and a disk (or a segment of a disk), that allows the Flemmings right hand rule for generators to apply in a wire, but alows current to flow from center to outside regardless of the direction of the field or rotation in a disk?
I'm looking forward to having my understanding upgraded.
Faraday vs. Flemming?
Re: Faraday vs. Flemming?
