8 to 10 year old boy add 50 ft bell wire, steel bar, 1 1/2 volt battery 
and some tacks.  You have a electro magnet.
next 6 volt battery = lift more tacks
more bell wire added to coil = lift more tacks
learned more volts + bigger coil (more wire) = stronger electro magnet
searches garage for another battery and more bell wire but in stead 
finds about 150 ft of 14 gauge insulated wire and a 110V male plug.
WOW a super magnet. can not wait to build this.
put it together plug it in sparks fly and fuse blows (thank God the fuse 
did not have a penny behind it).

It took out the electricity in the kitchen and 2 other rooms, this was 
20 years ago in an old house with old wiring.
Within a month of asking questions to people who were knowledgeable in 
electricity I knew what I had done wrong and basics of Ohms Law.
I learned that I would always try to know what was going to happen when 
I did something.  No "lets turn this and see what happens"

John


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