Galvanometer, Ammeter & Voltmeter - Unit # 15 Current Electricity - Class 10 Physics

Learn the fundamentals of electrical measuring instruments in this clear and conceptual lecture by Sir Muhammad Talha! Discover how a Galvanometer detects tiny electric currents, and how it is converted into an Ammeter (to measure heavy electric current) and a Voltmeter (to measure potential difference). This video covers essential concepts, working principles, circuit diagrams, and key board exam questions for Class 10 Physics. What You Will Learn in This Video: Introduction to Electrical Measuring Instruments (Current, Voltage & Resistance) What is a Galvanometer? Working principle, sensitivity, construction, and scale reading What is an Ammeter? How to measure electric current in amperes Conversion of Galvanometer into Ammeter: Role of low shunt resistance (Rs) connected in parallel What is a Voltmeter? How to measure potential difference / voltage Conversion of Galvanometer into Voltmeter: Role of high resistance connected in series Circuit Connections: Why Ammeter is always connected in series and Voltmeter in parallel For complete notes, PDFs, and numerical practice sheets, visit our official blog: https://talhaphysicsacademy.blogspot.com VIDEO TIMESTAMPS / CHAPTERS: 00:00 - Introduction to Electrical Measuring Instruments 00:00:46 - What is a Galvanometer? (Working Principle & Sensitivity) 00:02:46 - Internal Construction & Circuit Diagram of a Galvanometer 00:05:01 - What is an Ammeter? (Measuring Heavy Electric Currents) 00:06:48 - Conversion of Galvanometer into Ammeter (Shunt Resistance in Parallel) 00:08:52 - How to Connect an Ammeter in a Circuit (Series Connection) 00:09:35 - What is a Voltmeter? (Measuring Potential Difference / Voltage) 00:10:19 - Conversion of Galvanometer into Voltmeter (High Resistance in Series) 00:11:42 - How to Connect a Voltmeter in a Circuit (Parallel Connection)