Quiz — PCP2_analyse_TD2corrige.pdf

Question 1 sur 10 20:00

[{"id":158915,"question":"Quelle est l'unité SI 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":"L'unité de force dans le système international est le Newton (N), du nom d'Isaac Newton. 1 N = 1 kg·m·s⁻².","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":158916,"question":"La loi d'Ohm s'applique uniquement aux conducteurs ohmiques.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. La loi d'Ohm (U = R·I) ne s'applique qu'aux dipôles ohmiques, c'est-à-dire dont la résistance est constante.","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":158917,"question":"Quelle formule permet de calculer la concentration molaire d'une solution ?","option_a":"C = n\/V","option_b":"C = m\/V","option_c":"C = V\/n","option_d":"C = m\/n","option_e":"","option_f":"","bonne_reponse":"a","explication":"La concentration molaire C se calcule par C = n\/V, où n est la quantité de matière (en moles) et V le volume de la solution (en litres).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"C = n\/V\", \"b\": \"C = m\/V\", \"c\": \"C = V\/n\", \"d\": \"C = m\/n\"}}","_debug_options_count":4},{"id":158918,"question":"Un corps 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":"Vrai. Dans un mouvement rectiligne uniforme, la vitesse est constante, donc l'accélération (variation de vitesse) est 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":158919,"question":"Quelle est la relation entre la puissance électrique P, la tension U et l'intensité I ?","option_a":"P = U·I","option_b":"P = U\/I","option_c":"P = I\/U","option_d":"P = U²·I","option_e":"","option_f":"","bonne_reponse":"a","explication":"La puissance électrique se calcule par P = U·I, où U est la tension (en volts) et I l'intensité (en ampères).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"P = U·I\", \"b\": \"P = U\/I\", \"c\": \"P = I\/U\", \"d\": \"P = U²·I\"}}","_debug_options_count":4},{"id":158920,"question":"La loi des gaz parfaits s'écrit PV = nRT.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. La loi des gaz parfaits relie la pression (P), le volume (V), la quantité de matière (n), la constante des gaz parfaits (R) et la température (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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":158921,"question":"Quel est le symbole chimique de l'élément oxygène ?","option_a":"O","option_b":"Ox","option_c":"Og","option_d":"Oy","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l'oxygène est O, du latin 'oxygenium'.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"O\", \"b\": \"Ox\", \"c\": \"Og\", \"d\": \"Oy\"}}","_debug_options_count":4},{"id":158922,"question":"La résistance équivalente de deux résistances en série est toujours supérieure à chacune d'elles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. En série, les résistances s'additionnent : Req = R1 + R2, donc Req \u003E R1 et Req \u003E R2.","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":158923,"question":"Quelle est l'unité SI de la pression ?","option_a":"Pascal (Pa)","option_b":"Bar (bar)","option_c":"Atmosphère (atm)","option_d":"Torr (Torr)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'unité SI de la pression est le Pascal (Pa), équivalent à 1 N\/m².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Pascal (Pa)\", \"b\": \"Bar (bar)\", \"c\": \"Atmosphère (atm)\", \"d\": \"T","_debug_options_count":4},{"id":158924,"question":"La réaction de combustion complète du méthane produit du dioxyde de carbone et de l'eau.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. L'équation de combustion complète du méthane (CH₄) est : CH₄ + 2O₂ → CO₂ + 2H₂O.","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}]