Question

if a sine wave representing ac voltage has an effective value of 70 vac what would be the waves peak value​

Answer 1

Answer:

99 V

Explanation:

The effective voltage of an AC current (also called rms voltage) is given by

$V_{rms} = \frac{V_0}{\sqrt{2}}$

where

Vrms is the rms voltage

V0 is the peak voltage

In this problem, we know the effective voltage:

$V_{rms} = 70 V$

Therefore, we can re-arrange the equation to find the peak voltage:

$V_0 = V_{rms} \sqrt{2} =(70 V)(\sqrt{2})=99 V$