The Truth About Average Power in Inductive & Capacitive AC Circuits CH.7 XII Physics CH 7

In this lecture (Lecture 08 - Alternating Current | Class 12 Physics), Surendra Sir explains the step-by-step derivation of Average Power in Pure Inductive and Pure Capacitive AC Circuits, along with the core concept of Wattless Current. This video is essential for Class 12 Board Exams (CBSE / State Boards), JEE (Main & Advanced), and NEET aspirants. 📌 What You Will Learn in This Lecture: Average Power in a Pure Inductive Circuit ($P_{\text{avg}} = 0$): Complete mathematical derivation using integration over a full cycle. Average Power in a Pure Capacitive Circuit ($P_{\text{avg}} = 0$): Phase relationship between current and voltage, and step-by-step power calculation. Wattless Current (वॉटलेस करंट): Why current flows through purely reactive circuits without dissipating power. Summary & Formula Comparison: Resistive vs. Inductive vs. Capacitive power dissipation. ⏱️ Timestamps / Chapter Markers: 00:00 - Introduction & Topics Overview (Lecture 08) 01:18 - Average Power in Pure Inductive Circuit (Derivation) 04:00 - Calculating Work Done & Power over a Full Cycle 07:50 - Why Inductive Circuit Consumes Zero Average Power 09:16 - Average Power in Pure Capacitive Circuit (Derivation) 11:50 - Integration & Zero Power Proof for Capacitor 14:07 - What is Wattless Current? (Concept & Definition) 16:33 - Summary & Comparison of AC Circuits (R, L, C) 🔔 Support & Connect: 👍 Like the video if you found this derivation helpful! 💬 Comment below if you have any doubts or questions. 🔔 Subscribe to Apex Study Centre Bageshwar and press the bell icon for daily Physics lectures. 📲 Share with your classmates and study groups! 🏷️ Hashtags: #Class12Physics #AlternatingCurrent #WattlessCurrent #AveragePower #ACCircuits #CBSEClass12 #JEEPhysics #NEETPhysics #PhysicsDerivation #ApexStudyCentre