Electromagnetic Induction in 7 Minutes | Class 12 Physics Ch-6 | NCERT

Complete Class 12 Physics Electromagnetic Induction chapter explained in just 7 minutes! ⚡🧲 Perfect for CBSE, State Board Exam 2025, JEE Main, and JEE Advanced preparation. ⏱️ TIMESTAMPS: 0:00 Introduction: Magnetic Flux ($\Phi_B$)—The key concept 0:45 Faraday's Laws of Induction (The core principle of EMI) 1:30 Lenz's Law: The Direction of Induced Current (Conservation of Energy) 2:15 Motional EMF (Derivation for a rod moving in a magnetic field) 3:15 Eddy Currents (Concept, Uses, and Disadvantages) 4:00 Self-Induction and the definition of Self-Inductance (L) 4:45 Mutual Induction and the definition of Mutual Inductance (M) 5:30 AC Generator (Principle and Construction) 6:15 Summary of Key Formulas and Laws 📚 WHAT YOU'LL LEARN: ✅ Faraday's laws of electromagnetic induction ✅ Magnetic flux and its calculation ✅ Lenz's law and its applications ✅ Motional EMF and its derivation ✅ Induced EMF and induced current ✅ Self-inductance and mutual inductance ✅ Eddy currents and their applications ✅ AC generator principle ✅ Energy stored in inductor ✅ LC oscillations ✅ Growth and decay of current in LR circuit 🎯 PERFECT FOR: CBSE Class 12 Board Exam 2025 JEE Main & Advanced preparation State board students following NCERT Quick revision before exams Understanding electromagnetic concepts Numerical problem solving 📖 NCERT CHAPTER COVERED: Class 12 Physics - Chapter 6: Electromagnetic Induction (Latest NCERT Syllabus 2025-26) 🔥 WHY THIS VIDEO? Electromagnetic Induction is crucial for understanding electromagnetism with very high weightage in all exams. Students often struggle with Lenz's law direction, flux calculations, and inductance problems. We've simplified everything with clear diagrams and step-by-step problem-solving methods perfect for scoring maximum marks. 💡 IMPORTANT FORMULAS COVERED: Magnetic flux: φ = B·A = BA cosθ Faraday's first law: EMF induced when flux changes Faraday's second law: ε = -dφ/dt = -N(dφ/dt) Lenz's law: induced current opposes the change (negative sign) Motional EMF: ε = Bvl (for rod moving perpendicular to B) EMF in rotating coil: ε = NABω sinωt Self-inductance: ε = -L(dI/dt) Inductance of solenoid: L = μ₀n²Al = μ₀N²A/l Mutual inductance: ε₂ = -M(dI₁/dt) Energy stored in inductor: U = ½LI² Time constant: τ = L/R Growth of current: I = I₀(1 - e^(-t/τ)) Decay of current: I = I₀e^(-t/τ) LC oscillations: ω = 1/√(LC) Power loss due to eddy currents: P ∝ (Bωt)² 📊 CHAPTER WEIGHTAGE: Board Exam: 8-10 marks (Very High!) JEE Main: 3-5 questions JEE Advanced: 2-4 questions This is a HIGH WEIGHTAGE chapter - essential for all exams! 📝 RELATED TOPICS: #Class12Physics #ElectromagneticInduction #NCERT #CBSEBoard #BoardExam2025 #JEEPreparation #JEEMain #PhysicsOneShot #QuickRevision #Electromagnetism 🔔 SUBSCRIBE to Cosmic Edge for: Complete NCERT Physics chapter explanations All 15 chapters covered systematically Quick revision videos Numerical problem solving strategies Previous year JEE/NEET/Board questions Physics, Chemistry, Maths, Biology content New videos daily 🎯 RELATED VIDEOS YOU'LL LOVE: Electric Charges and Fields (Ch-1) ✓ Already Posted! Electrostatic Potential and Capacitance (Ch-2) ✓ Already Posted! Current Electricity (Ch-3) ✓ Already Posted! Moving Charges and Magnetism (Ch-4) ✓ Already Posted! Magnetism and Matter (Ch-5) ✓ Already Posted! Alternating Current (Ch-7) - Coming Soon! 💬 COMMENT BELOW: Which topic confused you the most? Need a detailed video on Lenz's law applications? Which physics chapter should I cover next? Any doubts - ask away! --- 👨‍🎓 ABOUT COSMIC EDGE: Making STEM education accessible! We create short, focused videos that help you understand complex physics concepts quickly and score better in your exams. --- ⚠️ DISCLAIMER: This is a comprehensive revision video covering key concepts. For detailed derivations and more practice problems, refer to your NCERT textbook and solve all NCERT exercises thoroughly. 👍 If this video helped you master Electromagnetic Induction, please LIKE, SHARE with your classmates, and SUBSCRIBE for more physics content! Good luck with your physics preparation! ⚡🧲 #CosmicEdge #PhysicsClass12 #NCERTPhysics #CBSEPhysics #ElectromagneticInduction #FaradaysLaw #LenzsLaw #MotionalEMF #Inductance #EddyCurrents #BoardExam #JEE #JEEMain #PhysicsRevision #Electromagnetism #StudyWithMe #ExamPreparation #STEMEducation #PhysicsHelp