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Homework Help: Vrms for offset sine wave

  1. Sep 25, 2015 #1
    1. The problem statement, all variables and given/known data
    The rms voltage for a sine wave with zero offset is given by Vrms= 1/(√2)Vpeak. Calculate the rms voltage for a sine wave with a peak-to-peak voltage of 1V.

    2. Relevant equations

    3. The attempt at a solution
    This may be a really easy question with an answer of (√2)/4 but i wasn't sure if you could use the equation Vpeak-to-peak=2Vpeak with an offset in the sine wave.
  2. jcsd
  3. Sep 25, 2015 #2


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    Staff: Mentor

    Hi Ardec, Welcome to Physics Forums.

    Your answer will depend upon what you mean by an "offset". Usually an offset means that there is a DC component added to the signal, so for example a sinewave riding on a DC value. This has the effect of shifting the sinewave up or down from the 0V level. But taking the problem as stated you simply have a sinewave with a peak voltage of 1/2 V, no offset. So can you explain what you mean by offset?
  4. Sep 25, 2015 #3
    I miss read the question and correct myself the second after i posted this, there is no offset, and i didn't see a way to delete the thread. Thanks anyways for the answer
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