Guide

Writedownthenumberofironbars
ontheironcoreinthetablebelowfor
eachcaseofoneandtwobatteries.
Whathappenedtothenumberof
ironbarsontheironcore?
Inwhichsetuparethemostiron
barsattracted?
Experiment Numberofbatteries
Onebattery
Twobatteries
Bars
Bars
Numberofironbars
ontheironcore
1
2
Writedownthenumberofironbarsontheiron
coreinthetablebelowforeachcaseofoneand
twobatteries.
Experiment
Numberofturns
onthecoil
turns
100
200
Bars
turns Bars
Numberofironbars
ontheironcore
1
2
Results
9
Check the strength of an electromagnet