Derivation 26/65 | Magnetic Field Due to a Long Straight Wire Using Ampere’s Law | Class 12 Physics

In Derivation 26/65 of our complete 65 Class 12 Physics Derivations Series, we derive the expression for the magnetic field due to a long straight current-carrying wire using Ampere’s Circuital Law. This is an important derivation from Moving Charges and Magnetism and is highly relevant for CBSE Class 12 Physics Board Exams, NCERT-based questions and competitive-exam preparation. 📌 Topics Covered: • Ampere’s Circuital Law • Magnetic field due to a long straight current-carrying wire • Selection of Amperian loop • Step-by-step derivation • Direction of magnetic field using the Right-Hand Thumb Rule • Important formula and applications 🎯 Useful for: CBSE Class 12 Physics | Board Exams | NCERT Physics | JEE Foundation | Moving Charges & Magnetism 📚 Continue the complete 65 Derivations Series to master the important Class 12 Physics derivations step by step. 🏫 Shree Ram Educators 📍 KB Plaza, Sector 2, Greater Noida West 🎓 Classes 9–12 | CBSE | JEE/NEET Foundation | PCM & PCB 📢 CBSE Test Series starts 14 November. Subscribe to Physics by Vikas Sir for Class 12 Physics derivations, concepts, numericals and exam-oriented preparation. #Class12Physics #PhysicsDerivations #CBSEPhysics #MovingChargesAndMagnetism #AmpereLaw #MagneticField #PhysicsByVikasSir #ShreeRamEducators