A periodic waveform observed across a load is represented by
$V(t)=\begin{cases} 1+\sin\omega t & 0\leq \omega t< 6\pi \\ -1+ \sin\omega t & 6\pi \leq \omega t< 12\pi \end{cases}$
The measured value, using moving iron voltmeter connected across the load, is
- $\sqrt{\dfrac{3}{2}} \\$
- $\sqrt{\dfrac{2}{3}} \\$
- $\dfrac{3}{2} \\$
- $\dfrac{2}{3}$
