【電験二種】理論 令和７年 問7　電子の円運動の関係式

This problem concerns the circular motion of electrons under a magnetic field, and since it deals with almost the same content as problems in the Class 3 Electrical Engineer Examination, it's a problem you should definitely aim to solve completely. In this video, we carefully explain the content of the circular motion and the algebraic manipulation in this problem, utilizing the characteristics of the slides, so please watch until the end. The key to solving this problem lies in the relationship between the circular motion of electrons. 0:00 Intro & Profile and New Book Introduction 01:15 Problem 02:42 One-Point Explanation 1. Fleming's Left-Hand Rule 04:15 One-Point Explanation 2. Centripetal Force in Circular Motion (Mechanics) 04:48 Answer and Explanation (1) 05:53 Answer and Explanation (2) 06:44 Answer and Explanation (3) 07:13 Answer and Explanation (4) 08:53 Answer and Explanation (5) 09:16 Summary --------------------------------------- ★Explanation on the Denken-ou website (Electrical Engineer 2nd Class Theory, 2025, Question 7) https://denken-ou.com/c2/rironr7-7/ ★[E-book version of Denken-ou] Electrical Engineer 2nd Class Primary Examination Reiwa 8th edition Yearly order https://denken-ou-tanaoroshi.com/item... Sort by field https://denken-ou-tanaoroshi.com/item... Type 2 theory by subject Year order https://denken-ou-tanaoroshi.com/item... 3c5e731324dadad By Category: https://denken-ou-tanaoroshi.com/item... ★Trial Version Download [E-book version of Denken-ou] https://denken-ou-tanaoroshi.com/item... ★Paper Book Available Here Available on Amazon [Book version of Denken-ou] Electrical Engineer Class 2 Primary Examination, 2026 Edition https://amzn.to/4l2mZIZ ★New Reference Book Collaboration between Denken Academia and Denken King [Thermal Power Generation] Denken Soldier's Textbook ~Denken Soldiers Spellbook~ https://denkenia-archives.stores.jp/i... [DC Circuits] Denken Soldier's Textbook ~Denken Soldiers Spellbook~ https://denkenia-archives.stores.jp/i... --------------------------------------- #Electrical Engineer Class 2 #Theory #Past Exam Explanations #Denken King #2025 #Question 7 #Electron Theory #Circular Motion