(Sarah of the Clue Crew demonstrates a science experiment.) The iron wire heats up as electricity flows through it; if you shorten the wire, it melts a result of this electrical condition, an excess flow of charge
The length of a wire affects its 
resistance, which determines how much current flows in the wire and how hot the
... [DOC] [TLE] Ohm's Law and resistance [PAR] So far, we have studying static electric charge, only touching on flow of ... the 
force between two current carrying wires, as we will investigate next term.