Question

(8 points) Suppose you see the trace to the right on your oscilloscope screen. You have set the vertical scale to 5 volt per square and the horizontal to 2 ms per square. What is the peak-to-peak voltage? What is the rms voltage?

Answer 1

Answer:

The peak to peak value of voltage is 20 V whereas the RMS value of voltage is 14.14 V

Explanation:

Peak to Peak Voltage

As per the equation of $v_p$ for oscilloscope screen

$v_p=h \times vertical scale$

Here

• h is the number of squares between the x axis and the peak of the signal which is 4.
• Vertical scale is given as 5V

$v_p=4 \times 5\\v_p=20 V$

So the peak to peak value of voltage is 20 V.

RMS Voltage

RMS voltage is given as

$v_{rms}=\frac{v_p}{\sqrt{2}}$

Substituting values in the equation from above

$v_{rms}=\frac{v_p}{\sqrt{2}}\\v_{rms}=\frac{20}{\sqrt{2}}\\v_{rms}=14.14 V$

So the rms value of voltage is 14.14 V.