Скачать или смотреть ⚡ Alternating Current (AC) | Class 12 Physics | CBSE & ISC | ONE SHOT Revision

Alternating Current (AC) | Class 12 Physics | CBSE & ISC | ONE SHOT Revision

Welcome to iMATE Foundation 🎓
In this ONE SHOT lecture, you will understand the entire Alternating Current (AC) chapter of Class 12 Physics, explained clearly, logically, and strictly as per CBSE & ISC syllabus.

This chapter is high-weightage and very important for board exams, especially numericals, derivations, and graph-based questions. Watching this one video is enough to confidently score full marks from AC.

📘 TOPICS COVERED IN THIS ONE SHOT
🔹 1️⃣ Basics of Alternating Current

AC vs DC

Alternating emf and current

Peak value, RMS value & average value

Phase, frequency & angular frequency

🔹 2️⃣ AC Through Circuit Elements

AC through resistor

AC through inductor

AC through capacitor

Phase relationship between V & I

Graphs explained clearly

➡️ Very important 2–3 mark questions

🔹 3️⃣ Series LCR Circuit

Impedance

Phasor diagrams

Resonance in LCR circuit

Condition for resonance

Sharpness of resonance

➡️ Most scoring numerical-based topic

🔹 4️⃣ Power in AC Circuits

Average power

Power factor

Wattless current

Power loss & efficiency

🔹 5️⃣ AC Generator (Alternator)

Construction

Working principle

EMF equation

Difference between AC & DC generator

➡️ Frequently asked theory question

🔹 6️⃣ Transformers

Principle & construction

Step-up & step-down transformers

Efficiency of transformer

Energy losses & their reduction

➡️ Guaranteed board question

🔹 7️⃣ Board Exam Focus

Important formulas & derivations

PYQ-type numericals

Graph-based questions

Common mistakes students make

🎯 WHY THIS ONE SHOT IS PERFECT FOR YOU

✅ Entire chapter in one video
✅ CBSE + ISC syllabus aligned
✅ Clear derivations & numericals
✅ Graphs + phasor diagrams simplified
✅ Perfect for last-minute revision

👨‍🎓 WHO SHOULD WATCH THIS VIDEO?

Class 12 CBSE Physics students

Class 12 ISC Physics students

Students preparing for board exams

Students struggling with AC numericals

⏱️ SUGGESTED TIMESTAMPS

0:00 – Introduction
4:20 – AC Basics
11:30 – AC Through R, L, C
23:40 – LCR Circuit
36:20 – Power in AC
44:10 – AC Generator
52:30 – Transformer
59:40 – Board Tips & Questions

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