Motion of Charge at Boundary of Two Magnetic Fields — JEE in 59 Sec 🔥
❓ Concept 🎬 Motion of Charge at Boundary of Two Magnetic Fields — Concept in 59 Sec Ek charged particle uniform magnetic field mein gaya — 👉 circular motion start 🔄 Par jaise hi particle boundary cross karta hai aur magnetic field change hoti hai, 👉 radius bhi change ho jaata hai! Ab sawal yeh hota hai: Net displacement kaise aur kyun aata hai? 🔥 🖼️ Concept Image ✍️ Short Explanation Yeh question formula-based nahi , pure concept + geometry ka test hota hai. Agar tum radius–bending logic samajh gaye, toh answer automatically build ho jaata hai 😎 🔹 Step 1 — Magnetic Force = Circular Motion (FOUNDATION 💯)** Jab charge q q , speed v v ke saath magnetic field B B ke perpendicular move kare: q v B = m v 2 r qvB = \frac{mv^2}{r} So radius: r = m v q B r=\frac{mv}{qB} 📌 Direct observations : B B ↑ ⇒ r r ↓ (particle zyada bend karega) B B ↓ ⇒ r r ↑ (particle kam bend karega) 🔹 Step 2 — Two Regions = ...