Not an answerable question because you've specified none of the variables such as rate of change of magnetic flux, flux density, distance, current etc.
There probably are formulae that allow you to calculate the eddy currents for given conditions, but I've not encountered them.
However it doesn't take much to induce at least very small currents, for that is the principle of the magnetic coupling in a speedometer.
Yes.Yes.Yes.Yes.
yes
No. Earth's magnetic field is produced by currents in the liquid outer core.
Eddy currents in a magnetic drum can be produced by rotating the drum in close proximity to a magnetic field. The changing magnetic field induces currents in the metal drum, which in turn creates its own magnetic field that interacts with the original field, causing eddy currents to flow within the drum.
No. Any current produces a magnetic field. Look at Maxwell's equations.
The three elements that produce a magnetic field are electric currents, magnetic materials, and changing electric fields. These elements interact to generate magnetic fields and are fundamental to understanding electromagnetism.
Not exactly. A CHANGING magnetic field, or a material moving through a magnetic field, will produce a VOLTAGE. This may or may not result in an actual current.
Electric currents produce magnetic fields through the interaction of moving electric charges. When an electric current flows through a conductor, such as a wire, the moving electrons create a magnetic field around the conductor. This magnetic field is generated by the alignment of the electrons' spins and their movement in a particular direction. The strength of the magnetic field is directly proportional to the amount of current flowing through the conductor.
Electric currents ... especially in coils.
Motion of a coil within a magnetic field will induce a current in the coil if it can complete a circuit.
Three things required to produce electromotive force (EMF) in an alternator are a magnetic field, a conductor, and relative motion between the magnetic field and the conductor.
Gauss's law: Electric charges produce an electric field. Gauss's law for magnetism: There are no magnetic monopoles. Faraday's law: Time-varying magnetic fields produce an electric field. Ampère's law: Steady currents and time-varying electric fields produce a magnetic field.