In this in-depth Class 12 Physics derivation, you will learn exactly how to calculate the torque acting on a magnetic dipole (bar magnet) when placed in a uniform magnetic field. We derive the famous expression: τ=MBsinθ, where M is the magnetic moment and B is the magnetic field. Understand the concept of couple and the direction of the restoring torque! Welcome to the Magnetism and Matter chapter! Mastering this derivation is key for your board exams, JEE, and NEET preparation. We break down the forces, vector geometry, and final formula for the maximum and minimum torque. ntroduction: What is a Magnetic Dipole and Uniform Magnetic Field? Diagram Analysis: Forces acting on the North and South Poles Concept of Couple and Torque Deriving the formula: Torque=Force×Perpendicular Distance Final Derivation of τ=MBsinθ Special Cases: Maximum Torque (θ=90 ) and Minimum Torque (θ=0 ,180 ) If this video helped you conquer this important derivation, please Like, Share, and Subscribe for more Class 12 Physics tutorials! Related Video (Axial & Equatorial Fields): • (Lecture 06) Magnetic Field at Equatorial ... #TorqueDerivation #magneticdipole #UniformMagneticField #class12physics #magnetismandmatter #MBSinTheta #physicsderivations #cbse #jeephysics #neetpreparation #barmagnet #physicsformula #ncertphysicsclass12