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The Flow of Electricity

Posted on Feb 11 2013 by Margaret Wegener

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Experiment Overview

This experiment investigates the parameters that affect the flow of electricity. Initial measurements enable comparison of resistance through various pathways involving current flow from hand to hand, across the chest. Then separate investigations test variation of electrical resistance with material properties – charge carriers – and variation with geometrical shape of pieces of a particular material (ie: as resistivity is kept constant). The experiment provides opportunity to apply Ohm’s law in practical situations, in order to better understand the basic principles of electrical safety. From the experiment students should conclude how best to reduce (by insulation) the risks of electrical hazards. 

 

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