JEE MAIN 2025: Magnetism PYQs Part - 4 | CRACK the Exam with Er. P. C. Yadav скачать в хорошем качестве

JEE MAIN 2025: Magnetism PYQs Part - 4 | CRACK the Exam with Er. P. C. Yadav

This video contains All the Previous year questions (PYQs) of Magnetism JEE Main 2025. This is the Part - 4 of this topic. To download the pdf, Join our telegram Channel - t.me/bgk_fusion All Links: 📢 Gmail: bgk.fusion@gmail.com 📢 Facebook: facebook.com/bgkfusion 📢Instagram: instagram.com/bgk_fusion 📢Telegram: t.me/bgk_fusion 📞Contact No: +91 8448444607 Welcome to Bhartiya Gyan Fusion Kendra! Unlock your potential. Crack IIT-JEE & NEET. A dedicated educational channel for medical and engineering entrance exam aspirants. Our mission is to make top-quality coaching accessible and affordable for every student. 📚✨ Your learning mentor: Er. P. C. Yadav Sir — with 25 years of trusted offline coaching experience, now online to help you succeed! 🎓 What you’ll get: ✅ High-quality video lessons covering Physics, Chemistry, and Mathematics step by step ✅ Proven strategies and preparation tips to crack IIT-JEE and NEET efficiently ✅ Complete syllabus coverage aligned with NCERT and competitive exam standards ✅ Interactive doubt-solving sessions and personalized feedback through comments 💬 Why subscribe? 💡 Regular updates with new topic-wise tutorials and exam insights 📘 Access to chapter-wise practice problems, previous years’ questions, and detailed solution walkthroughs 🕒 Stay motivated with study hacks and time management techniques 🔔 Don’t forget to subscribe, like, and press the bell icon to never miss an update! 📢 Share with your friends and help us build a strong community of top performers. 💬 Your feedback helps us improve — comment your thoughts and questions below. Join our mission to make quality education available to all. Master the fundamentals, accelerate your preparation, and achieve exam success! Let’s crack IIT-JEE and NEET together — learn smart and aim for the top! 💥 Timestamps : 00:00 Q25 - 29th Jan Evening Shift 03:45 Q26 - 2nd April Evening Shift 06:33 Q27 - 23rd Jan Morning Shift 10:33 Q28- 23rd Jan Evening Shift 14:04 Q29- 28th Jan Evening Shift 16:10 Q30 - 2nd April Morning Shift 17:35 Q31 - 7th April Morning Shift 21:06 Q32 -7th April Evening Shift Q25) See in pdf Q26) In a moving coil galvanometer, two moving coils 𝑴_𝟏 and 𝑴_𝟐 have the following particulars: 𝑹_𝟏=𝟓 𝛀 , 𝑵_𝟏=𝟏𝟓 , 𝑨_𝟏=𝟑.𝟔 ×𝟏𝟎^(−𝟑) 𝒎^𝟐 , 𝑩_𝟏=𝟎.𝟐𝟓 𝑻 𝑹_𝟐=𝟕 𝛀 , 𝑵_𝟐=𝟐𝟏 , 𝑨_𝟐=𝟏.𝟖 ×𝟏𝟎^(−𝟑) 𝒎^𝟐 , 𝑩_𝟐=𝟎.𝟓𝟎 𝑻 Assuming that torsional constant of the springs are same for both coils, what will be the ratio of voltage sensitivity of 𝑴_𝟏 and 𝑴_𝟐 ? Q27) Consider a moving coil galvanometer (MCG): The torsional constant in moving coil galvanometer has dimensions [𝑴𝑳^𝟐 𝑻^(−𝟐)] Increasing the current sensitivity may not necessarily increase the voltage sensitivity. If we increase number of turns (N) to its double (2N), then the voltage sensitivity doubles. MCG can be converted into an ammeter by introducing a shunt resistance of large value in parallel with galvanometer. Current sensitivity of MCG depends inversely on number of turns of coil. Q28) A galvanometer having a coil of resistance 30 𝛀 need 20 mA of current for full-scale deflection. If a maximum current of 3A is to be measured using this galvanometer, the resistance of the shunt to be added to the galvanometer should be 𝟑𝟎/𝒙 𝛀 , where 𝒙 is ____________ . Q29) A bar magnet has total length 2𝒍 = 20 units and the field point 𝑷 is at a distance 𝒅 = 10 units from the center of the magnet. If the relative uncertainty of length measurement is 1%, then uncertainty of the magnetic field at point P is Q30) The relationship between the magnetic susceptibility (𝝌) and the magnetic permeability (𝝁) is given by : (𝝁_𝟎 is the permeability of free space and 𝝁_𝒓 is relative permeability) Q31) The percentage increase in magnetic field (B) when space within a current carrying solenoid is filled with magnesium is (magnetic susceptibility, 𝝌_𝑴𝒈=𝟏.𝟐 ×𝟏𝟎^(−𝟓) ) Q32) Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) : Magnetic monopoles do not exist. #magnetism #jeephysics #jeemains2026 #physicsconcepts #magnetismpyqs