une guirlande d'arbre alimente par 220 V comporte 3 groupes de 20 lampes identique
Sous quel tension fonctionne chaqune des lampes

By: USER1974
27 Agustus 2025 physique-chimie 5 minutes
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138 views 138 comments 15 shares

Question

Grade: Education Subject: physique-chimie
une guirlande d'arbre alimente par 220 V comporte 3 groupes de 20 lampes identique
Sous quel tension fonctionne chaqune des lampes
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Answer (138)

Best Answer
(212)
Elle fonctionne chacune de 220÷20=11V car dans un circuit en dérivation la tension aux bornes d'une boucle est égale à la tension au bornes du generateur. Donc 20 lampes se partagent 220V loi des tension en série
Answered on 27 Agustus 2025

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