Half Deflection Method & Figure of Merit of a Galvanometer | Step-by-Step Practical & Calculations

Welcome! In this video, we cover the complete step-by-step practical demonstration on how to find the resistance of a galvanometer using the Half Deflection Method and determine its Figure of Merit (\bm{k}). Whether you are preparing for your Class 12 Physics practical exams, university lab assessments, or viva voce, this video breaks down the entire experiment into simple, easy-to-understand steps! ⏱️ Timestamps / Chapters: • 0:00 - Introduction to the experiment • 0:19 - Required apparatus and setup components • 0:50 - Understanding the circuit diagram • 1:29 - Connecting the series combination • 2:16 - Connecting the shunt in parallel • 2:44 - Preparing for readings and safety checks • 3:04 - Setting the battery and achieving full deflection • 4:02 - Observation table and recording first reading • 4:36 - Measuring half deflection ($ heta/2$) • 5:11 - Adjusting the shunt resistance to reach half deflection • 6:23 - Formulas for Galvanometer Resistance () and Figure of Merit (K) • 6:48 - Final calculation steps and wrap-up 📚 Key Topics Covered: Complete circuit setup (Battery Eliminator, High Resistance Box, Low Resistance Box, Galvanometer, Keys). How to adjust resistance to get full deflection and half deflection. Tabular column and error minimization techniques. Important viva questions for practical exams. 💡 Don't forget to LIKE, SHARE, and SUBSCRIBE for more Physics practicals and educational tutorials!