What if we created a large-scale version of a copper wire, just for fun? It could be used in science classes.

There would be spheres, with an condutor core and insulant cover. These spheres would be charged, for example by a Van der Graaf generator. 

The spheres would float in water streams, driven by pumps. 

As the spheres flow, does the water or pipes get warmer, such as in an analogous to a electrical resistance?

If you make a coiled pipe, would there be a magnetic field if the stream circulated it?

Now imagine that you place two spheres on an axis, and this axis can rotate freely by its middle point. Place a circular stream around it, with a pump, and put some "electrons". Does the bipole rotate?