Steve Vai Whitesnake A guitar pickup is actually similar to a powerful mike coil. For many years, dynamic microphones have already been wired with the style coil attached with the principal of the microphone's transformer, and perhaps not recommended to surface (‘floating'). The microphone's situation is typically attached to the wire guard, which is linked to the microphone amplifier's surface (see Rane's website for more discussion).
By and big, energetic microphones are very calm devices consequently of the combination of transformer isolation and healthy, floating transmission lines throughout, in addition to guarded, humbucking coils.
So why don't you guitars? Guitars are notoriously plagued by noise. Humbucking pickups are just an incomplete (though important!) solution. The obvious answer is always to move practicing the guitar pickup to a healthy production, just like a microphone. The same idea was published this 2001 patent application such as Steve Vai Whitesnake?