# NCERT Solutions for Class 12 Physics Chapter 7

NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current in PDF form free to download. NCERT Solutions for other subjects are also given to download. Solutions are given in downloadable form as well as online study mode. Questions for JEE Mains and advance, NEET, AIIMS, GGSIPU, BITS and other competitive exams are given below with answers.

## NCERT Solutions for Class 12 Physics Chapter 7

Go back to NCERT Solutions 12 Physics Main Page

Download NCERT Solutions for Class 12 Physics Chapter 7 Alternating Current in PDF form with the links given below.

### Questions for Competitive Exams

Following are the sets of questions with answers for JEE Mains and advance, NEET, AIIMS, GGSIPU, BITS, COMDEC, NDA and other exams including CBSE board exams. For the questions 1 to 83, which are based on Electromagnetic Induction, Click here.

##### AC Generator

Principle and wording of AC Generator, differential equations for current and charge in LCR circuit. Equation of impedance and its geometrical representation. Resonance condition in LCR, average power and power factor. See Answers.

##### Transformer

Step up and step down transformer, principle and wording, efficiency of ideal and practically used transformer. Uses as voltage regulator, induction furnace and power transmission, etc. See Answers.

##### Assertion – Reason type Questions

Instruction: Read assertion and reason carefully, select proper option from given below.

(a) Both assertion and reason are true and reason explains the assertion.

(b) Both assertion and reason are true but reason does not explain the assertion.

(c) Assertion is true but reason is false.

(d) Assertion is false and reason is true. See Answers.

##### Match the Columns

Match the terms given in first column with the terms in the second column. Select the appropriate answers given below. See Answers.