It is not a description of a practical generator:

1. The magnetic field is weaker than the field of a typical refrigerator magnet.
2. There is no indication of a mechanism to sustain the magnetic field or maintain its direction.
3. The coil of wire is initially described as rotating, but then described as having been taken out of the field. A generator requires continuous rotation or some other continuous motion.
4. There is no indication of a method of supporting, rotating or otherwise moving the coil of wire with respect to the magnetic field.
5. There is no indication of any means to connect any kind of electrical load to the coil. A practical generator continuously supplies electrical power through electrical conductors to a load that can utilize the power.

It is not a description of a practical generator:

1. The magnetic field is weaker than the field of a typical refrigerator magnet.
2. There is no indication of a mechanism to sustain the magnetic field or maintain its direction.
3. The coil of wire is initially described as rotating, but then described as having been taken out of the field. A generator requires continuous rotation or some other continuous motion.
4. There is no indication of a method of supporting, rotating or otherwise moving the coil of wire with respect to the magnetic field.
5. There is no indication of any means to connect any kind of electrical load to the coil. A practical generator continuously supplies electrical power through electrical conductors to a load that can utilize the power.
6. There are practical generators that are only intended to detect how fast something is moving. There may be some minimum voltage and current necessary for that function, but the minimum could be extremely low. It is not necessary to prove any minimum to say that a generator is practical.