Quiz — فيزياء الصف 10

Question 1 sur 10 20:00

[{"id":86493,"question":"Quelle est l’unité de mesure de la tension électrique dans le système international ?","option_a":"Volt (V)","option_b":"Ampère (A)","option_c":"Ohm (Ω)","option_d":"Watt (W)","option_e":"","option_f":"","bonne_reponse":"a","explication":"La tension électrique s’exprime en volts (V), d’après la loi d’Ohm U = R × I.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Volt (V)\", \"b\": \"Ampère (A)\", \"c\": \"Ohm (Ω)\", \"d\": \"Watt (W)\"}}","_debug_options_count":4},{"id":86494,"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":"Vrai, la résistance R est proportionnelle à la longueur L du conducteur (R = ρ × L\/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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":86495,"question":"Quel appareil mesure l’intensité du courant électrique ?","option_a":"Voltmètre","option_b":"Ampèremètre","option_c":"Ohmmètre","option_d":"Générateur","option_e":"","option_f":"","bonne_reponse":"b","explication":"L’ampèremètre est utilisé pour mesurer l’intensité du courant en ampères (A).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Voltmètre\", \"b\": \"Ampèremètre\", \"c\": \"Ohmmètre\", \"d\": \"Géné","_debug_options_count":4},{"id":86496,"question":"La loi de la réflexion stipule que l’angle d’incidence est égal à l’angle de réflexion.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, c’est un principe fondamental de l’optique géométrique.","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":86497,"question":"Quelle formule lie la puissance électrique (P), la tension (U) et l’intensité (I) ?","option_a":"P = U + I","option_b":"P = U × I","option_c":"P = U \/ I","option_d":"P = I \/ U","option_e":"","option_f":"","bonne_reponse":"b","explication":"La puissance électrique se calcule avec P = U × I, où U est en volts et I en ampères.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"P = U + I\", \"b\": \"P = U × I\", \"c\": \"P = U \/ I\", \"d\": \"P = I \/ U\"","_debug_options_count":4},{"id":86498,"question":"Un objet est en mouvement rectiligne uniforme si sa vitesse est constante.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, un mouvement rectiligne uniforme implique une vitesse constante en direction et en 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\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":86499,"question":"Quelle est la relation entre la masse (m), la force (F) et l’accélération (a) ?","option_a":"F = m × a","option_b":"F = m \/ a","option_c":"F = a \/ m","option_d":"F = m + a","option_e":"","option_f":"","bonne_reponse":"a","explication":"La deuxième loi de Newton stipule que F = m × a, où F est la force nette.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"F = m × a\", \"b\": \"F = m \/ a\", \"c\": \"F = a \/ m\", \"d\": \"F = m + a\"","_debug_options_count":4},{"id":86500,"question":"La lumière blanche est composée de plusieurs couleurs.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai, la lumière blanche est une superposition de toutes les couleurs du spectre visible.","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":86501,"question":"Quel est le rôle d’un fusible dans un circuit électrique ?","option_a":"Augmenter la tension","option_b":"Protéger le circuit contre les surintensités","option_c":"Mesurer la résistance","option_d":"Convertir l’énergie","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un fusible protège le circuit en fondant lorsque l’intensité dépasse une valeur critique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Augmenter la tension\", \"b\": \"Protéger le circuit contre les suri","_debug_options_count":4},{"id":86502,"question":"La vitesse d’un objet est toujours positive.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"b","explication":"Faux, la vitesse peut être négative si l’objet se déplace dans le sens opposé à la référence choisie.","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}]