第一種電気工事士 学科 過去問1250問・全問解説

StackWorks LLC

About this app

The Class 1 Electrician's License written exam consists of 50 questions: 40 general questions and 10 wiring diagram questions. A score of 60 or higher is required to pass. This app includes 1,250 questions, including publicly released questions from 2009 to the second half of 2026, as well as sample questions from the first half of 2026. All questions include explanations. Calculation problems show the formula and procedure, identification problems show how to distinguish between devices, and legal problems show the relevant articles.

■ Features for this exam
- Wiring diagram questions display the wiring diagram from that exam alongside the question. Tap to enlarge
- Calculations for high-voltage power receiving equipment and electric motors are explained step-by-step, including formulas and procedures.
- Flashcards with photos of equipment, materials, and tools for memorization.
- Notes on changes in regulations since the exam was published, such as the construction of new electrical installations for small businesses.
- 50-question, 140-minute mock exam in the actual exam format.

■ Contents
- Published questions and past questions: 1,250 questions (25 sets)
- Explanations for all questions
- 41 flashcards

■ Learning Features to Help You Pass
- Today's Learning: Automatically presents questions that need review and new questions, tailored to the scoring of the actual exam and your weak points.
- Review questions that reappear when you're starting to forget. Set an exam date to ensure a full review cycle before the exam.
- Practice by year, subject, and specified conditions. Incorrect and ambiguous questions are automatically listed.
- Elimination method by long-pressing options. Correct/incorrect answers and explanations for each statement, bookmarks, and notes.
- Mock exam with the same time and allocation as the actual exam (actual exam format). The app displays scores for each subject based on passing criteria.
* Prospects for passing, study calendar, consecutive study days, home screen widget, daily reminders
* Adjustable font size, dark theme, and on tablets, questions and explanations are displayed side-by-side.

■ Passing Pack
The second half of the 2026 First-Class Electrician's License Examination can be solved from the beginning. The Passing Pack unlocks access to all years, sessions, and practice exams.

■ Caution
* This app is an independent learning app and is not affiliated with the Japan Electrical Engineers Examination Center. It does not represent any government agency or examination administering body.

• Official exam information (source): https://www.shiken.or.jp/construction/first/
• Source of exam questions: https://www.shiken.or.jp/construction/first/qa/
• Questions and correct answers: Japan Electrical Engineers Examination Center, "Past Exam Questions" (FY2009-FY2026 second half)
• Laws and regulations may be amended. Please check the latest information provided by the examination administering body.
• Learning records are saved only on your device and will not be transmitted externally.

What’s new

画面と学習の仕組みを新しくしました。平成21年度から令和8年度下期までの学科試験すべてに解説を付け、配線図は図面と一緒に表示します。器具・材料の写真で覚える暗記カード、本番形式の模擬試験も使えます。