Not really. Magnetism - just like electricity or gravitation - is a "conservative force", which basically means that if you get energy when something moves in one direction, then you NEED the same amount of energy to move it in the opposite direction. For example, it requires energy to lift an object (against the force of gravity); in theory you can recover this energy when the object falls back down.
Other planets
What is the relationship between electrical frequency and magnetic field speed for an ac machine
Yes. In historical times , clay pots have shown that the earth's magnetic field has reversed.
Current flows inside he Earth.
Its molten iron core.
Volcanoes
It is Earths' "Magnetosphere".
Yes.
It is made by the movement of the earths core and magma field
The earths magnetic field results from deep in the earths core. Magnetic conduction from within the earths core is believed to be the cause of this.
because it has the hydro electric power to control the earths magnetic field
the earths magnetic signature is a negative polarity signature
earths magnetic field is generated by the circulation of liquid metal.
magnetosphere
It is Earths' "Magnetosphere".
= An effect of the magnetic field is "Van Allen radiation belt" =
No. Earth's magnetic field does not affect its axis of rotation.