Quiz — 133-148 Fyzia Cls9.pdf

Question 1 sur 10 20:00

[{"id":161836,"question":"Quelle est la formule de la vitesse moyenne ?","option_a":"v = d\/t","option_b":"v = t\/d","option_c":"v = d × t","option_d":"v = a × t","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse moyenne se calcule en divisant la distance parcourue (d) par le temps écoulé (t).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"v = d\/t\", \"b\": \"v = t\/d\", \"c\": \"v = d × t\", \"d\": \"v = a × t\"}}","_debug_options_count":4},{"id":161837,"question":"Un objet en mouvement rectiligne uniforme a une accélération nulle.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Dans un mouvement rectiligne uniforme, la vitesse est constante, donc l'accélération est bien nulle.","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":161838,"question":"Quelle est l'unité de mesure de la force dans le système international ?","option_a":"Newton (N)","option_b":"Joule (J)","option_c":"Watt (W)","option_d":"Pascal (Pa)","option_e":"","option_f":"","bonne_reponse":"a","explication":"La force s'exprime en Newton (N) dans le système international.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Newton (N)\", \"b\": \"Joule (J)\", \"c\": \"Watt (W)\", \"d\": \"Pascal (Pa)","_debug_options_count":4},{"id":161839,"question":"La tension électrique se mesure avec un ampèremètre.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"La tension se mesure avec un voltmètre, tandis que l'ampèremètre mesure l'intensité du courant.","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":161840,"question":"Quelle loi physique relie la tension, l'intensité et la résistance dans un circuit électrique ?","option_a":"Loi d'Ohm","option_b":"Loi de Joule","option_c":"Loi de Newton","option_d":"Loi de Faraday","option_e":"","option_f":"","bonne_reponse":"a","explication":"La loi d'Ohm stipule que U = R × I, où U est la tension, R la résistance et I l'intensité.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Loi d'Ohm\", \"b\": \"Loi de Joule\", \"c\": \"Loi de Newton\", \"d\": \"Loi ","_debug_options_count":4},{"id":161841,"question":"La chaleur se propage toujours du corps le plus froid vers le corps le plus chaud.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"La chaleur se propage du corps le plus chaud vers le corps le plus froid, selon le deuxième principe de la thermodynamique.","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":161842,"question":"Quelle est la formule de l'énergie cinétique ?","option_a":"Ec = 1\/2 × m × v²","option_b":"Ec = m × g × h","option_c":"Ec = P × t","option_d":"Ec = U × I","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'énergie cinétique se calcule avec la formule Ec = 1\/2 × m × v², où m est la masse et v la vitesse.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Ec = 1\/2 × m × v²\", \"b\": \"Ec = m × g × h\", \"c\": \"Ec = P × t","_debug_options_count":4},{"id":161843,"question":"Un circuit en série a la même intensité de courant dans tous ses composants.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Dans un circuit en série, l'intensité du courant est la même dans tous les composants.","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":161844,"question":"Quelle est l'unité de mesure de la puissance électrique ?","option_a":"Watt (W)","option_b":"Ampère (A)","option_c":"Volt (V)","option_d":"Ohm (Ω)","option_e":"","option_f":"","bonne_reponse":"a","explication":"La puissance électrique s'exprime en Watt (W).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Watt (W)\", \"b\": \"Ampère (A)\", \"c\": \"Volt (V)\", \"d\": \"Ohm (Ω)\"}}","_debug_options_count":4},{"id":161845,"question":"La résistance électrique d'un conducteur dépend de sa longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La résistance d'un conducteur augmente avec sa longueur, selon la loi R = ρ × (L\/S), où ρ est la résistivité, L la longueur et S la section.","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}]