Quiz — Mansouri - Condensateur et dipôle RC.pdf

Question 1 sur 10 20:00

[{"id":68046,"question":"Quel est l'unité de la capacité d'un condensateur ?","option_a":"Farad (F)","option_b":"Henry (H)","option_c":"Ohm (Ω)","option_d":"Volt (V)","option_e":"","option_f":"","bonne_reponse":"a","explication":"La capacité s'exprime en Farad (F), en hommage à Michael Faraday. 1 F = 1 C\/V.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Farad (F)\", \"b\": \"Henry (H)\", \"c\": \"Ohm (Ω)\", \"d\": \"Volt (V)\"}}","_debug_options_count":4},{"id":68047,"question":"Lors de la charge d'un condensateur dans un dipôle RC, la tension aux bornes du condensateur évolue selon une fonction...","option_a":"linéaire","option_b":"exponentielle","option_c":"logarithmique","option_d":"constante","option_e":"","option_f":"","bonne_reponse":"b","explication":"La tension évolue exponentiellement : u(t) = U0(1 - e^(-t\/τ)).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"linéaire\", \"b\": \"exponentielle\", \"c\": \"logarithmique\", \"d\": \"con","_debug_options_count":4},{"id":68048,"question":"La constante de temps τ d'un dipôle RC est égale à :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"τ = R×C, où R est la résistance et C la capacité du condensateur.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":68049,"question":"Quel est le rôle principal d'un condensateur dans un circuit électrique ?","option_a":"Amplifier le courant","option_b":"Stocker de l'énergie électrique","option_c":"Convertir l'énergie","option_d":"Filtrer les signaux","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un condensateur stocke temporairement de l'énergie sous forme de champ électrique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Amplifier le courant\", \"b\": \"Stocker de l'énergie électrique\", ","_debug_options_count":4},{"id":68050,"question":"En régime permanent, un condensateur se comporte comme un...","option_a":"court-circuit","option_b":"circuit ouvert","option_c":"résistance nulle","option_d":"source de tension","option_e":"","option_f":"","bonne_reponse":"b","explication":"En régime permanent (t → ∞), le condensateur est chargé et bloque le courant continu (circuit ouvert).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"court-circuit\", \"b\": \"circuit ouvert\", \"c\": \"résistance nulle\", ","_debug_options_count":4},{"id":68051,"question":"La décharge d'un condensateur dans un dipôle RC est toujours plus rapide que sa charge.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"La décharge et la charge suivent la même constante de temps τ = R×C.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":68052,"question":"Quelle est la relation entre la charge Q, la capacité C et la tension U aux bornes d'un condensateur ?","option_a":"Q = C\/U","option_b":"Q = U\/C","option_c":"Q = C×U","option_d":"Q = U×C²","option_e":"","option_f":"","bonne_reponse":"c","explication":"La relation fondamentale est Q = C×U, où Q est en coulombs, C en farads et U en volts.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Q = C\/U\", \"b\": \"Q = U\/C\", \"c\": \"Q = C×U\", \"d\": \"Q = U×C²\"}}","_debug_options_count":4},{"id":68053,"question":"Dans un circuit RC série, la tension aux bornes de la résistance est maximale...","option_a":"au début de la charge","option_b":"à la fin de la charge","option_c":"pendant la décharge","option_d":"jamais","option_e":"","option_f":"","bonne_reponse":"a","explication":"Au début de la charge (t=0), la tension aux bornes de la résistance est égale à la tension d'alimentation (UR = U0).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"au début de la charge\", \"b\": \"à la fin de la charge\", \"c\": \"pen","_debug_options_count":4},{"id":68054,"question":"Un condensateur de 10 µF est chargé sous 5 V. Quelle est la charge stockée ?","option_a":"50 µC","option_b":"2 µC","option_c":"5 µC","option_d":"50 mC","option_e":"","option_f":"","bonne_reponse":"a","explication":"Q = C×U = 10×10⁻⁶ F × 5 V = 50×10⁻⁶ C = 50 µC.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"50 µC\", \"b\": \"2 µC\", \"c\": \"5 µC\", \"d\": \"50 mC\"}}","_debug_options_count":4},{"id":68055,"question":"La capacité d'un condensateur dépend de :","option_a":"Sa couleur","option_b":"Sa forme géométrique","option_c":"Son poids","option_d":"Son prix","option_e":"","option_f":"","bonne_reponse":"b","explication":"La capacité dépend de la surface des armatures, de la distance entre elles et du diélectrique utilisé.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Sa couleur\", \"b\": \"Sa forme géométrique\", \"c\": \"Son poids\", \"d\"","_debug_options_count":4}]