Question
Download Solution PDFWhy does magnetic fringing occur at the ends of a magnetic circuit?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is: 4) The magnetic field lines spread out and become weaker.
Explanation:
- Magnetic fringing occurs at the ends of a magnetic circuit because:
- Magnetic field lines encounter lower reluctance in air compared to the core material, causing them to spread outward (fringe) rather than staying confined.
- This spreading leads to a weaker magnetic field near the edges, as some flux "leaks" instead of following the intended path.
Why Not the Other Options?
- The MMF is not constant → MMF (magnetomotive force) depends on the current and turns; fringing occurs even with constant MMF.
- The reluctance of the material increases → Reluctance is a property of the material and doesn’t inherently cause fringing.
- The magnetic poles are not well-defined → While poles exist, fringing is due to flux spreading, not pole definition.
Last updated on Jun 16, 2025
-> RRB JE CBT 2 answer key 2025 for June 4 exam has been released at the official website.
-> Check Your Marks via RRB JE CBT 2 Rank Calculator 2025
-> RRB JE CBT 2 admit card 2025 has been released.
-> RRB JE CBT 2 city intimation slip 2025 for June 4 exam has been released at the official website.
-> RRB JE CBT 2 Cancelled Shift Exam 2025 will be conducted on June 4, 2025 in offline mode.
-> RRB JE CBT 2 Exam Analysis 2025 is Out, Candidates analysis their exam according to Shift 1 and 2 Questions and Answers.
-> The RRB JE Notification 2024 was released for 7951 vacancies for various posts of Junior Engineer, Depot Material Superintendent, Chemical & Metallurgical Assistant, Chemical Supervisor (Research) and Metallurgical Supervisor (Research).
-> The selection process includes CBT 1, CBT 2, and Document Verification & Medical Test.
-> The candidates who will be selected will get an approximate salary range between Rs. 13,500 to Rs. 38,425.
-> Attempt RRB JE Free Current Affairs Mock Test here
-> Enhance your preparation with the RRB JE Previous Year Papers.