Quiz — Série RC corrigée - Tunis prof réo.pdf

Question 1 sur 10 20:00

[{"id":52974,"question":"Quelle est l'expression de la constante de temps τ d'un circuit RC série ?","option_a":"τ = R + C","option_b":"τ = R × C","option_c":"τ = U \/ I","option_d":"τ = L \/ R","option_e":"","option_f":"","bonne_reponse":"b","explication":"La constante de temps τ d'un circuit RC série est donnée par τ = R × C, où R est la résistance en ohms et C la capacité en farads.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"τ = R + C\", \"b\": \"τ = R × C\", \"c\": \"τ = U \/ I\", \"d\": \"τ = L ","_debug_options_count":4},{"id":52975,"question":"Lors de la charge d'un condensateur dans un circuit RC, la tension à ses bornes augmente de manière :","option_a":"Linéaire","option_b":"Exponentielle","option_c":"Logarithmique","option_d":"Constante","option_e":"","option_f":"","bonne_reponse":"b","explication":"La tension aux bornes du condensateur suit une courbe exponentielle croissante : 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":52976,"question":"La décharge d'un condensateur dans un circuit RC est un phénomène :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La décharge d'un condensateur est bien un phénomène exponentiel décroissant, décrit par U(t) = U₀ × e^(-t\/τ).","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":52977,"question":"Quelle est l'unité de la capacité C d'un condensateur ?","option_a":"Volt","option_b":"Ampère","option_c":"Farad","option_d":"Ohm","option_e":"","option_f":"","bonne_reponse":"c","explication":"L'unité de la capacité C est le farad (F), qui représente la quantité de charge stockée par volt.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Volt\", \"b\": \"Ampère\", \"c\": \"Farad\", \"d\": \"Ohm\"}}","_debug_options_count":4},{"id":52978,"question":"Dans un circuit RC, si on double la valeur de la résistance R, la constante de temps τ :","option_a":"Diminue de moitié","option_b":"Double","option_c":"Reste inchangée","option_d":"Quadruple","option_e":"","option_f":"","bonne_reponse":"b","explication":"Puisque τ = R × C, si R double, τ double également (C restant constant).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Diminue de moitié\", \"b\": \"Double\", \"c\": \"Reste inchangée\", \"d\":","_debug_options_count":4},{"id":52979,"question":"La courbe de décharge d'un condensateur est toujours :","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La courbe de décharge est toujours une exponentielle décroissante, quelle que soit la valeur de R ou C.","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":52980,"question":"Quelle formule donne la tension aux bornes du condensateur pendant sa charge ?","option_a":"U(t) = U₀ × e^(-t\/τ)","option_b":"U(t) = U₀(1 - e^(-t\/τ))","option_c":"U(t) = R × I","option_d":"U(t) = C × dU\/dt","option_e":"","option_f":"","bonne_reponse":"b","explication":"Pendant la charge, la tension aux bornes du condensateur suit U(t) = U₀(1 - e^(-t\/τ)), où U₀ est la tension maximale.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"U(t) = U₀ × e^(-t\/τ)\", \"b\": \"U(t) = U₀(1 - e^(-t\/τ))\", \"c\"","_debug_options_count":4},{"id":52981,"question":"Si τ = 0,5 s pour un circuit RC, combien de temps faut-il pour que le condensateur soit chargé à 63% de sa tension maximale ?","option_a":"0,5 s","option_b":"1 s","option_c":"0,315 s","option_d":"0,693 s","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le temps pour atteindre 63% de la charge maximale est égal à τ, soit 0,5 s.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"0,5 s\", \"b\": \"1 s\", \"c\": \"0,315 s\", \"d\": \"0,693 s\"}}","_debug_options_count":4},{"id":52982,"question":"Un circuit RC peut-il être utilisé comme filtre passe-bas ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Oui, un circuit RC série se comporte comme un filtre passe-bas, atténuant les hautes fréquences.","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":52983,"question":"Quelle est la relation entre l'intensité I et la tension U aux bornes d'un condensateur en régime permanent ?","option_a":"I = U \/ R","option_b":"I = C × dU\/dt","option_c":"I = 0","option_d":"I = U × C","option_e":"","option_f":"","bonne_reponse":"c","explication":"En régime permanent (condensateur chargé), l'intensité I traversant le condensateur est nulle, car dU\/dt = 0.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"I = U \/ R\", \"b\": \"I = C × dU\/dt\", \"c\": \"I = 0\", \"d\": \"I = U × C","_debug_options_count":4}]