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🎯 In this video by Nayra Physics Classes, we’ll deeply understand one of the most important topics of Class 12 Physics (Chapter – Alternating Current):
👉 Power Dissipation in AC Circuit
👉 Power Factor (Cos φ) and its Significance
👉 Wattless Current
👉 Derivation of Average Power Formula (P = VI cos φ)

💡 Concepts Covered:
1️⃣ Instantaneous Power in AC Circuit
2️⃣ RMS Values of Current & Voltage
3️⃣ Power in Resistor, Inductor & Capacitor
4️⃣ Power in LCR Series Circuit
5️⃣ Condition for Maximum Power Transfer
6️⃣ Meaning of Wattless Current & its Practical Importance

📘 Derivation Included:

Step-by-step mathematical explanation

Real-life examples for better visualization

📚 Perfect for:
✔ CBSE / State Board Class 12 Students
✔ NEET / JEE Aspirants
✔ Revision before Exams

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🌟 Channel: Nayra Physics Classes
🎥 Learn Physics Conceptually & Practically
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