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* Contrôles Continus - P2 - Promo 2029

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On Considère 3 charges ponctuelles placées au somment d'un triangle rectangle isocèle  et .

On donne:

Le champ électrique total créé au point O est:

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Temps estimé: 2 minutes

On considère deux charges ponctuelles et   séparées par une distance r (figure ci-dessous)

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Estimated time: 1 minute

Only one of these statements is true.

Select the right answer

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Estimated time: 1 minute

The norm of the electric field created by a point charge 

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Temps estimé: 2 minutes

On considère les lignes du champ électrique créé par deux charges ponctuelles et (voir figure)

On peut affirmer que:

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On Considère 3 charges ponctuelles placées au somment d'un triangle rectangle isocèle  et .

On donne:

Le champ électrique total créé au point O est:

0%
0%
0%
0%
View this question

Le vecteur champ électrique créé par une charge négative est

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La norme du champ électrique créé par une charge ponctuelle

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Estimated time: 4 minutes

We consider a hemisphere of center O and radius R. It is charged with a total charge distributed uniformly in its volume with a volume charge density constant.

The spherical volume element 

The expression of the charge Q of this hemisphere is: 

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Estimated time: 3 minutes 

We consider 4 point charges on axis and separated by a distance a.

The charge and

 

The total electric force vector exerted on the charge  is: 

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