For a sinusoidal alternating voltage with peak value

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

V_{m}

, which one of the following gives its root-mean-square (rms) value

V_{\text{rms}}

? (a)

\dfrac{2V_{m}}{\pi}

(b)

\dfrac{V_{m}}{2}

(c)

\dfrac{V_{m}}{\sqrt2}

(d)

V_{m}\sqrt2