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2 siècle d'énergie électrique
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10 Terms
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1
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Oersted
Découvre l'électromagnétisme 1820
2
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Électromagnétisme
1 fil parcouru par un courant crée autour de lui un champ magnétique
3
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Faraday
Découvre l'induction électromagnétique en 1831
4
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Induction électromagnétique
Le mouvement d'un aimant dans une bobine crée un courant électrique
5
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Application de l'induction électromagnétique
Alternateur (courant alternatif) Générateur (courant continu) : convertie meca en elec
6
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Alternateur
Rotor + stator
7
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Rotor + stator
Aimant (ou electro-aimant) et bobine (les deux peuvent être soit rotor soit stator)
8
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Rendement définition
Quel pourcentage de l'énergie fournie est transformée en énergie utile
9
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Formule rendement/efficacité
Putile/Pfournie×100 = Eutile/Efournie×100
10
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Rendement dépend de...
Taille bobine/puissance aimant/vitesse rotation
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