Measuring Voltage with an Oscilloscope: Channel A RMS Voltage

[real-menace]

1. An oscilloscope is used to measure the voltage across
two components using Channel A and Channel B. Deduce the RMS voltage of the signal measured by
Channel A

I just want to know what they mean by "deduce the RMS voltage"

Do i need to calculate the Vrms?

 

[rock.freak667]

Do i need to calculate the Vrms?

Based on the readings that you can get from the oscilloscope, you should either be able to get V_rms directly or V_max to get V_rms.

 

[Trespaser5]

It sounds like it, assuming it's a sine wave take your amplitude and divide it by the square root of 2.

 

[real-menace]

ok Thanks for the reply :)

 

[rezeew]

I can clarify that "deducing the RMS voltage" means to calculate or determine the root-mean-square (RMS) voltage of the signal measured by Channel A. This is a mathematical method of finding the effective voltage of a varying signal. Yes, in order to deduce the RMS voltage, you would need to calculate it using the appropriate formula. The oscilloscope measures the voltage over time and displays it as a waveform, but to get a more accurate measurement, the RMS voltage is often calculated. This is because the RMS voltage takes into account the varying amplitude of the signal over time, rather than just the peak voltage. It is a standard measurement used in electrical engineering and is important for understanding the power and energy of a signal. I hope this clarifies the meaning of "deducing the RMS voltage" and the importance of calculating it in electrical measurements.