Main Question or Discussion Point
Obviously if a magnet falls down a conducting tube, it induces a current in the tube. But what if you surrounded the tube with other identical tubes in parallel with the first one so that they're touching, and then wrapped wire around those other tubes? Would the current induced in the wrapped wire be of the same magnitude as the current induced in the central tube? Or would the induced current in the wire be as if the tubes weren't there, and the magnet was just falling down the solenoid of wire?