Home/ Questions/Q 8284
Next
Answered
Ashok0210
  • 3
Asked: 2021-03-05T05:35:54+00:00 In:

(a) The peak voltage of an ac supply is 300 V. What is the rms voltage? (b) The rms value of current in an ac circuit is 10 A. What is the peak current?

  • 3

Class 12 Physics
CBSE and UP Board
Alternating Current
Chapter-7 Exercise 7.2

NCERT Solutions for Class 12 Physics Chapter 7 Question 2

2020-2021cbse and up boardclass 12 chapter-7 physicsclass 12 physicsncert class 12 alternating current
Share

    1 Answer

    1. Best Answer

      Ans (a).

      Peak voltage of the ac supply, Vo = 300 Vrms voltage is given as:

      V = V0/√ 2 = 300/√ 2 = 212.1 V

      Ans (b).

      The rms value of current is given as: I = 10 A

      Now, peak current is given as: I0 = √ 2 I = √ 2 x 10 = 14.1 A

      • 2
    Leave an answer

    Leave an answer

    Browse