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conductors
material that allows east electron flow due to low resistance examples sliver copper gold aluminium uses wire circut boards electrical components
semi conductor
matieral that sometimes conducts electricity depending on condition example sillicon uses led solar cell microchips
insulator
matieral that blocks electron flow examples rubber wood glass uses protection electronic covering wires building installation
how power generating stations work
turbine spins a magnet around a coil of metal
photovoltaic
sunlight makes electrons move in matierl creating electricity used solar panels calculators satellites