Intensité du courant dans un circuit en série
1) Objectif, but de l’activité
Mesurer l’intensité du courant dans un circuit en série.
2) Protocole expérimental.
a- Construire un circuit en série comprenant 2 lampes (L1 et L2) et 1 générateur. Allumer le générateur
b- Prendre un ampèremètre et mesurer l’intensité dans tous les endroits possibles du circuit. (3 en tout) (Calibre 200m)
c-Rajouter une 3ème lampe (L3) et mesurer à nouveau l’intensité. (Calibre 200m)
c- Éteindre le générateur.
3) Observation et résultats de mesure.
Schéma A, B , C et D
123,0 mA (Calibre 200m)
122.9 mA (Calibre 200m)
122.9 (Calibre 200m)
95.5,4 (Calibre 200m)
Plus de lampes se trouvent avant l’ampèremètre, moins il y à d’intensité.
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