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“This collection of documents covers essential courses in Computer Science and Mathematics for first-year university students. It includes lecture notes, detailed summaries, solved exercises, and past exam questions. The materials explain topics clearly, from algorithms, programming, and data structures to calculus, linear algebra, and statistics. Designed to help students save time, understand key concepts, and prepare effectively for exams, these resources are perfect for Blida University students and anyone studying in similar programs.”

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Université Abdelhamid Mehri-constantine2
Faculté des nouvelles technologies de l’information et de la communication
Département MI
Electricité générale


Fiche de TD N°3
Exercice 1 : (électrostatique)
Trouver la charge totale, QT d'un:
1. Fil rectiligne de longueur 1, chargé uniformément de densité de charge linéaire λ.
2. Disque de rayon R=2m chargé électriquement avec une densité surfacique σ constante
σ=2 c/m2
3. Sphère de rayon R, chargée uniformément de densité de surfacique σ.
4. Cylindre rayon R et hauteur H, chargé en volume par une densité volumique constante
ρ.


Exercice 2 :
Déterminer la résistance équivalente du dipôle AB formé par l'association de résistances ci-
dessous: R1 = 100 Ω R2 = 50 Ω R3 = 60 Ω R4 = 25 Ω




Exercice 3 :
Soit le circuit suivant :
1. Indiquer à côté de chaque flèche la tension qu'elle
représente.
2. Combien peut-on définir de mailles dans ce circuit ?
3. calculer les courants qui traversent chaque branche du
circuit. R = 2 Ω
4. calculer la tension UAB. Avec R = 2 Ω

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