Electromagnétisme Flashcards

1
Q

1G (Gauss)

A

= 0,1 mT

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2
Q

champ magnétique terrestre en France

A

5.10^-5 T

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3
Q

champ magnétique aimant permanent

A

0,001 à 0,1 T

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4
Q

champ magnétique obtenu en labo

A

up to 10T

IRM: 1,5-3T

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5
Q

champ magnétique terrestre

A

inversion pôles géographique et magnétiques

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6
Q

sens champ magnétique

A

sud au nord aiguille boussole
nord au sud aimant droit/ aimant U
pôle sud au pôle nord géographique

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7
Q

produit vectoriel

A

w = u.v.sinα
produit vectoriel de 2 vecteurs colinéaires: α=0º donc w = 0 → w est minimal
produit vectoriel de 2 vecteurs perpendiculaires α=90º donc w=v.u → w est maximal

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8
Q

action champ magnétique sur un élément de circuit

A

apparition force de Laplace

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9
Q

action champ magnétique sur particule chargée q en mouvement

A

apparition force de Lorentz

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