question_answer

If \[{{E}_{0}}\] represents the peak value of the voltage in an ac circuit, the r.m.s. value of the voltage will be [CPMT 1972; MP PMT 1996]

A)            \[\frac{{{E}_{0}}}{\pi }\]  

B)            \[\frac{{{E}_{0}}}{2}\]

C)            \[\frac{{{E}_{0}}}{\sqrt{\pi }}\]                                         

D)            \[\frac{{{E}_{0}}}{\sqrt{2}}\]