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Physics 7 Online
OpenStudy (anonymous):

what is the cause of resistance

OpenStudy (anonymous):

the highly close packed concentration of atoms in the metal...because cuurent is flow of energy not charges...sp when when they collide with eah other in close pakcing..friction causes that appears as resistance..!!!

OpenStudy (kropot72):

There is is very good explanation here: http://en.wikipedia.org/wiki/Electrical_resistivity_and_conductivity

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