Question

The maximum value of a.c. voltage in a circuit is 707V. Its rms value is

• A. 70.7 V
• B. 100 V
• C. 500 V
• D. 707 V

Answer 1

The correct option is C 500 V

$E_{rms}=\frac{E_0}{\sqrt{2}}=\frac{707}{1.41}=500V$