The magnet is charged with electricity from a battery .
As the operator receives trio me : wage . am the field of action he moves t116 magnet behind the board , trio ball following tile same course on the front of the board .
The magnet is charged with electricity from a battery , and as the operator receives trio me : wage . am the field of action he moves t116 magnet behind the board , trio ball following tile same course on the front of the board .