Électricité Flashcards

1
Q

U

A

La tension en V

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2
Q

I

A

L’intensité en A

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3
Q

I=

A

I = |Q|/∆t

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4
Q

U générateur =

A

U g = E - rI

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5
Q

U résistance

A

U r = r*I

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6
Q

P =

A

P= U*I
P = Ener/∆t

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7
Q

Rendement

A

Ñ = Putile/Pconsommée

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8
Q

E dans Un= E-rI

A

E est la tension à vide et l’ordonnée à l’origine

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9
Q

Pelec = Udipole*Idipole

A

UpuissanceI=(E-rI)I
UpI = EI -rI²
Pelec = Pchimique +Pthermique

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10
Q

Bilan énergie/puissance

A

P/E utilisée DIPOLE P/E créé
P/E perdue

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11
Q

Convention générateur / récepteur

A

Récepteur= si U même sens que courant alors -
Générateur= si U même sens que courant alors +

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12
Q

Upn =

A

Upn= somme des U de la MAILLE

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13
Q

I=

A

I= somme des intensités au noeud

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14
Q

Le sens du courant conventionnelle

A

Du plus vers le moins

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