Class 12 · Physics

Alternating Current

18 topics — from Some Important Integrals through DC Generator & Motor. Expect about 1 question in NEET — roughly 4 of 720 marks.

Updated 25 Aug 2026 18 topics Physics · Class 12
In short

Alternating Current is a Class 12 Physics chapter covering 18 topics. Expect about 1 question in NEET — roughly 4 of 720 marks.

18
Topics
In this chapter
1
Expected question
≈ 4 of 720 marks
12
Class
Physics
97
Chapters in the syllabus
27 in Physics

Topics covered #

18 topics, in teaching order.

  1. Some Important Integrals
  2. AC & DC Definition
  3. Av Value of Alternating Current & Voltage
  4. RMS Value of Alternating Current & Voltage
  5. AC Circuit containing only R
  6. AC Circuit containing only C
  7. AC Circuit containing only L
  8. Series I, C, R, Circuit
  9. Wattless & Wattfull Current
  10. Series L R Circuit
  11. Series R C Circuit
  12. L C Oscillation
  13. Resonance in Series I, C, R
  14. Quality Factor
  15. Parallel I, C, R & it's Resonance
  16. Transformer
  17. AC Generator
  18. DC Generator & Motor

Weightage #

Expect about 1 question in NEET — roughly 4 of 720 marks.

1 of 180 questions · 4 of 720 marks
This chapter's share of the paper. Weightage is indicative — it reflects how many questions have typically come from here, not a guarantee for any single year.

Practise this chapter #

Reading it once is not the same as being able to answer it under time.

Practice questionsChapter-wise MCQs with solutions Video lecturesTopic-by-topic walkthroughs Chapter testExam-format, timed NEET previous-year questionsPast questions from this chapter AIIMS previous-year questionsOlder AIIMS papers, same syllabus

Next in Physics

← PreviousElectromagnetic Induction

Frequently asked #

How many questions come from Alternating Current in NEET?
About 1 question — roughly 4 of the 720 marks available. It is a Class 12 Physics chapter.
What topics does this chapter cover?
18 topics — from Some Important Integrals through DC Generator & Motor. The full list is above.
Where can I practise Alternating Current?
Chapter-wise MCQs, video lectures, a timed chapter test, and both NEET and AIIMS previous-year questions — all linked above.