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Vous expliquerez comment le progrès technique agit sur la ... CORRIGE : UR =5-ULED = 5 - 1.5 = 3.5V ; ILED = IR Exercice 2 : ETUDE D'UNE MACHINE A COURANT CONTINU un effort sortant: F = (px?xD²) / 4 soit 3016 N 
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