[{"data":1,"prerenderedAt":196},["ShallowReactive",2],{"topic-page:\u002Fhigh-school\u002Fbasic-physics\u002Felectricity\u002Fcurrent-voltage-and-circuits":3},{"topic":4,"category":162,"seo":166,"breadcrumbs":171,"prerequisites":178,"nextTopics":190,"relatedTopics":195},{"id":5,"slug":6,"title":7,"summary":8,"canonicalPath":9,"categoryPath":10,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"generatedAt":14,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":16,"expectedKnowledge":22,"learningGoal":25,"blocks":26},"high-school-basic-physics-electricity-current-voltage-and-circuits","current-voltage-and-circuits","電流・電圧と回路の測り方","電流を電荷の流れる割合、電圧を電荷当たりのエネルギー差として捉え、電流計と電圧計を正しく接続します。","\u002Fhigh-school\u002Fbasic-physics\u002Felectricity\u002Fcurrent-voltage-and-circuits","\u002Fhigh-school\u002Fbasic-physics\u002Felectricity","beginner","student_high",6,"2026-07-28","ai_generated",[17,18,19,20,21],"物理基礎","電気","電流","電圧","回路",[23,24],"電荷","割り算と単位","電流と電圧の役割を区別し、電流計を直列、電圧計を並列に接続できるようになる。",[27,32,42,69,86,92,101,107,113,129,143,152],{"id":28,"type":29,"title":7,"subtitle":30,"shortDefinition":31},"hero","HeroBlock","流れる量と、二点間の差を分ける","電流は導線の断面を通過する電荷の割合、電圧は回路の二点間で電荷が受け渡すエネルギーに関わる差です。測りたい量の意味が、測定器のつなぎ方を決めます。",{"id":33,"type":34,"term":35,"definition":36,"plainExplanation":37,"keywords":38},"definition","DefinitionBlock","電流と電圧","電流Iは単位時間に断面を通過する電荷量、電圧Vは単位電荷当たりのエネルギー差を表します。","電流は回路を一周する経路の途中へ電流計を入れて測ります。電圧は抵抗などの両端二点を電圧計でつないで比べます。電圧そのものが導線を流れるのではありません。",[39,40,41],"電流は通過量","電圧は二点間","閉じた回路",{"id":43,"type":44,"title":45,"formulas":46,"strategy":68},"formula","FormulaBlock","電流と電圧の定義",[47,60],{"label":19,"expression":48,"meaning":49,"symbols":50},"I=Q\u002Ft","時間tの間に電荷量Qが断面を通過するときの平均電流です。",[51,54,57],{"symbol":52,"meaning":53},"I","電流。単位はA",{"symbol":55,"meaning":56},"Q","電荷量。単位はC",{"symbol":58,"meaning":59},"t","時間。単位はs",{"label":20,"expression":61,"meaning":62,"symbols":63,"tip":67},"V=W\u002Fq","電荷q当たりに受け渡されるエネルギーWで表します。",[64],{"symbol":65,"meaning":66},"V","電圧。1 V=1 J\u002FC","電流は一か所を通る量、電圧は二点を比べる量です。","通過量を問うならI、二点間の差を問うならVと判断します。",{"id":70,"type":71,"columns":72,"rows":76,"summary":85},"compare","CompareBlock",[73,74,75],"量","測る対象","測定器と接続",[77,81],[78,79,80],"電流I","導線を通る量","電流計を回路へ直列",[82,83,84],"電圧V","部品の両端","電圧計を部品へ並列","電流計は測りたい流れを通し、電圧計は比較したい二点へ橋をかけます。",{"id":87,"type":88,"src":89,"alt":90,"caption":91},"diagram","DiagramBlock","\u002Fassets\u002Fhigh-school\u002Fbasic-physics\u002Felectricity\u002Fcurrent-voltage-and-circuits\u002Fcurrent-voltage-and-circuits.svg","電池と抵抗の回路で電流計を直列、電圧計を抵抗の両端へ並列に接続した図","回路上のAは抵抗を通る電流と同じ流れを受ける直列接続、Vは抵抗の両端二点へ橋をかける並列接続です。下段では慣用電流と金属中の電子の向きを分けます。",{"id":93,"type":94,"steps":95,"title":100},"steps","StepBlock",[96,97,98,99],"測る量が電流か電圧かを決める","電流なら測る枝を一度切って電流計を入れる","電圧なら測る部品の両端へ電圧計をつなぐ","直流では端子の正負と目盛りを確認する","測定器を置く手順",{"id":102,"type":103,"scenario":104,"explanation":105,"result":106},"example","ExampleBlock","導線の断面を3.0 sの間に6.0 Cの電荷が通過した。","平均電流はI=Q\u002Ft=6.0\u002F3.0=2.0 Aです。AはC\u002Fsと同じで、一秒当たり2.0 Cが通過する割合を表します。電流の向きは正電荷が動くと決めた向きで、金属中の電子の移動方向とは逆です。","平均電流は2.0 Aです。",{"id":108,"type":109,"warningTitle":110,"message":111,"severity":108,"action":112},"warning","WarningBlock","電圧計を直列に入れない","電圧計は部品の両端の差を測るため、部品へ並列につなぎます。測定器の接続を逆にすると正しい測定になりません。","回路へ描き込む前に、測る一か所か比べる二点かを言葉で確認します。",{"id":114,"type":115,"title":116,"questions":117},"quiz","QuizBlock","量の確認",[118],{"question":119,"choices":120,"answerIndex":124,"choiceExplanations":125},"4.0 sの間に12 Cの電荷が断面を通過したとき、平均電流はどれですか。",[121,122,123],"3.0 A","48 A","0.33 A",0,[126,127,128],"正解です。I=Q\u002Ft=12\u002F4.0=3.0 Aです。","電荷量と時間を掛けず、単位時間当たりなので割ります。","時間を電荷量で割ると逆数になり、電流の定義と逆です。",{"id":130,"type":115,"title":131,"questions":132},"quiz-connection","接続の確認",[133],{"question":134,"choices":135,"answerIndex":124,"choiceExplanations":139},"抵抗を流れる電流と抵抗両端の電圧を同時に測る正しい接続はどれですか。",[136,137,138],"電流計は抵抗と直列、電圧計は抵抗と並列","両方とも抵抗と直列","電流計は並列、電圧計は直列",[140,141,142],"正解です。流れを測る電流計は同じ経路、二点差を測る電圧計は両端へつなぎます。","電圧計は抵抗の二端子を比べるため並列接続です。","二つの測定器の役割と接続が逆になっています。",{"id":144,"type":145,"title":146,"points":147},"summary","SummaryBlock","まとめ",[148,149,150,151],"電流はI=Q\u002Ftで単位はA","電圧は単位電荷当たりのエネルギー差","電流計は直列、電圧計は並列","電流方向と金属中の電子移動は逆",{"id":153,"type":154,"title":155,"nextTopics":156,"relatedKeywords":158},"next-action","NextActionBlock","電圧・電流・抵抗を式で結ぶ",[157],"high-school-basic-physics-electricity-ohms-law",[159,160,161],"オームの法則","抵抗","V-Iグラフ",{"path":10,"title":18,"description":163,"parentPath":164,"accentToken":165},"物理基礎の中でも、電流、電圧、回路の基本を扱うトピックを整理していくカテゴリです。","\u002Fhigh-school\u002Fbasic-physics","signal-blue",{"title":167,"description":168,"canonicalUrl":169,"ogImage":170},"電流・電圧と回路の測定 | 物理基礎","I=Q\u002Ftと電圧の意味を学び、電流計は直列、電圧計は並列につなぐ理由を整理します。","https:\u002F\u002Fzeqnilo.com\u002Fhigh-school\u002Fbasic-physics\u002Felectricity\u002Fcurrent-voltage-and-circuits","https:\u002F\u002Fzeqnilo.com\u002Fassets\u002Fsite\u002Fdefault-og.svg",[172,175,176,177],{"title":173,"path":174},"高校","\u002Fhigh-school",{"title":17,"path":164},{"title":18,"path":10},{"title":7,"path":9},[179],{"id":180,"title":181,"summary":182,"canonicalPath":183,"categoryPath":184,"categoryTitle":185,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":186},"high-school-basic-physics-wave-resonance-and-beats","共振・共鳴とうなり","固有振動数に合う外力で振幅が増える共振と、近い二音の重ね合わせで強弱が繰り返すうなりを区別します。","\u002Fhigh-school\u002Fbasic-physics\u002Fwave\u002Fresonance-and-beats","\u002Fhigh-school\u002Fbasic-physics\u002Fwave","波",[17,185,187,188,189],"共振","共鳴","うなり",[191],{"id":157,"title":159,"summary":192,"canonicalPath":193,"categoryPath":10,"categoryTitle":18,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":194},"一定温度の抵抗で成り立つV=RIを使い、電圧・電流・抵抗を単位付きで求め、V-Iグラフの傾きまで読みます。","\u002Fhigh-school\u002Fbasic-physics\u002Felectricity\u002Fohms-law",[17,18,159,160],[],1785565318082]