If an alternating voltage is represented as $E = 141\,sin\, (628\,t),$ then the rms value of the voltage and the frequency are respectively

  • A

    $141V,\,628Hz$

  • B

    $100V,\,50Hz$

  • C

    $100V,\,100Hz$

  • D

    $141V,\,\,100Hz$

Similar Questions

An alternating voltage is given by : $e = e_1\, \sin \omega t + e_2\, \cos \omega t$. Then  the root mean square value of voltage is given by :-

The $r.m.s$. voltage of the wave form shown is......$V$

In an $A.C.$ circuit, $I_{\text {rms }}$ and $I_{0}$ are related as

  • [AIPMT 1994]

Statement $-1$ : Capacitor can be used in $a.c.$ circuit in place of choke coil.
Statement $-2$ : Capacitor blocks $d.c.$ and allows $a.c.$ only.

The frequency of an alternating voltage is $50$ cycles/sec and its amplitude is $120\,V$. Then the $ r.m.s$. value of voltage is........$V$