What Is the Approximate RMS Voltage of a Sinusoidal Wave?

AI Thread Summary
To calculate the approximate RMS voltage of a sinusoidal wave, one can use the relationship between peak voltage (Vp) and RMS voltage (Vrms), where Vrms = Vp/√2. The discussion emphasizes the importance of measuring the peak-to-peak voltage (Vpp) to derive the RMS value, with the formula Vpp = 2 * Vp. Participants express uncertainty about finding the RMS voltage and seek clarification on the relationship between Vp and RMS. A link to a resource on RMS current is provided for further understanding. The conversation highlights the need for clear explanations of these electrical concepts.
Rasine
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alternating current wave prob...

assume the wave is sinusoidal. suppose that each horizontal division (13) represents 1.0 ns and that each vertical division (11) represents 1 mV. what is the approx. rms voltage?

please help me solve this.

i am not so sure how to find rms, and if you do please explain it.

thank you.
 
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Rasine said:
assume the wave is sinusoidal. suppose that each horizontal division (13) represents 1.0 ns and that each vertical division (11) represents 1 mV. what is the approx. rms voltage?

please help me solve this.

i am not so sure how to find rms, and if you do please explain it.

thank you.

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/acres.html#c2

Look at the example for RMS current.

Zz.
 
Rasine said:
assume the wave is sinusoidal. suppose that each horizontal division (13) represents 1.0 ns and that each vertical division (11) represents 1 mV. what is the approx. rms voltage?

please help me solve this.

i am not so sure how to find rms, and if you do please explain it.

thank you.
Were you trying to post some waveform? 11/13/etc. Whatever. If you want the RMS, just use the Vpp measurement to get you there. Vp= sqrt(2)*Vrms, Vpp = 2*sqrt(2)(Vrms)


EDIT -- If you want a more complete explanation of RMS versus Vpp, we can oblige.
 
what is the Vp measurement? and how does it related to rms?
 

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