Question

The peak voltage of an ac supply is 440 V, then its rms voltage is

• A. 31.11 V
• B. 311.1 V
• C. 41.11 V
• D. 411.1 V

Answer 1

Answer: (B)

311.1 V

Answer 2

: Here, ,$V_{m} = 440V$

$\therefore V_{rms} = \frac{V_{m}}{\sqrt{2}} = \frac{440}{\sqrt{2}} = 311.1V$