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19 November, 03:03

6. The peak value of an AC sine wave is

120 V. What's the effective value

(rounded) ?

A. 65 V

B. 85 V

C. 200 V

D. 140 V

+1
Answers (1)
  1. 19 November, 06:23
    0
    B. 85 V

    Explanation:

    E (rms) = E (peak-to-peak) / squareroot (2)

    E (rms) = 120V / 1.414 = 84.9 V

    (When rounded) = 85 V
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