What Is the Correct RMS Voltage Calculation for a Sinewave?

[shaqtus]

Homework Statement

[PLAIN]http://img16.imageshack.us/img16/7396/oscf.jpg

What is the RMS voltage of the top wave?

Homework Equations

RMS... root mean square

The Attempt at a Solution

If I'm right, the peak voltage is 1 V (gotten from 2 * 500mV). Square of 1 is 1. And there are 4 peaks, so 1 + 1 + 1 + 1 = 4. Mean is 4 / 4 = 1. Then sqrt of 1 is 1. So my final answer is 1 V. Is this right?

 

[gneill]

It looks to me like the top wave is plotted at 1V/division. Isn't that what this bit implies:

 

[NascentOxygen]

What is the RMS voltage of the top wave?

I assume this is a sinewave. Have you studied the RMS value of a sinewave? If not, then use a google search.

The Attempt at a Solution

If I'm right, the peak voltage is 1 V (gotten from 2 * 500mV). Square of 1 is 1. And there are 4 peaks, so 1 + 1 + 1 + 1 = 4. Mean is 4 / 4 = 1. Then sqrt of 1 is 1. So my final answer is 1 V. Is this right?

No. Not even close, I'm afraid.