Скачать или смотреть Alternating Current & Voltage | Class 12 Physics Chapter 20 | Federal Board | NBF Book 2025

Alternating Current & Voltage | Class 12 Physics Chapter 20 | Federal Board | NBF Book 2025
Topic 20.1: Alternating Current and Voltage Explained | Class 12 Physics New Syllabus FBISE
Chapter 20: Alternating Current | Class 12 Physics | Federal Board (FBISE) NBF Book

Welcome to our 2nd Year Physics Lecture Series 2025, fully based on the NBF Book and Federal Board (FBISE) syllabus.
In this video, we’ll study Topic 20.1: Alternating Current and Voltage, one of the most important concepts for both board exams and engineering entrance tests.

📌 In this lecture you will learn:

What is Alternating Current (AC)?

What is Alternating Voltage?

Difference between AC and DC

Representation of AC using a Sine Wave

Time Period, Frequency, and Amplitude of AC

Instantaneous, RMS, and Average Values

Importance of AC in household and industrial circuits

AC waveform graph explanation

⚡ Why this topic matters:
Alternating current powers our homes, industries, and devices. Understanding its waveform and behavior is essential for mastering transformers, generators, and power transmission (coming up in later topics).

🎓 This lecture is 100% aligned with Federal Board (FBISE) and follows the NBF Physics Book 2025. Concepts are explained in simple English and Urdu for quick understanding.

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