Capacitors and Capacitance of Parallel Plate Capacitor| Electric Potential & Capacitor| Physics 12

Capacitors and Capacitance of Parallel Plate Capacitor| Electric Potential & Capacitor| Physics 12
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📘 In this lecture, we discuss *Capacitors and the Capacitance of a Parallel Plate Capacitor* as covered in Physics Class 12 by the National Book Foundation (NBF).

🔋 A capacitor is a device used to store electric charge and energy. This lecture introduces:
• What is a capacitor?
• How capacitors work
• Types of capacitors (focus on parallel plate capacitor)

📐 The formula for the capacitance of a parallel plate capacitor is derived as:
C = ε₀ A / d
Where:
C = capacitance
ε₀ = permittivity of free space
A = area of plates
d = distance between plates

📊 The lecture also covers:
• SI unit of capacitance (Farad)
• Factors affecting capacitance
• Effect of dielectric materials on capacitance
• Physical significance and practical use of capacitors

💡 This concept is widely used in electronics, timing circuits, energy storage, and filtering AC signals.

🎓 Ideal for FSC Part 2 students preparing for board exams or strengthening basic concepts in electrostatics.

📗 Book: Physics Class 12 – National Book Foundation
📍 Lecture 4 | Chapter: Electric Potential & Capacitor
👨‍🏫 Instructor: Sir Anjum Teaches

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