actually this experiment was handled 2 weeks ago with the students...because i have nothing to write tonight so i decided to upload the picture...well this experiment is to investigate the relationship between the number of turns with the strength of the magnetic field...whenever the number of turns of the copper wire is increase the strength of the magnetic field of the iron core also increase....
my students were so excited when the experiment succeed...it is so hard to get the good result because the clip that connect the wire to the copper wire always loose while doing the experiment ... this picture was taken from the first group succeed after hour trial....
well done guys for not giving up hope in the investigation.(^_^)
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