A voltmeter is set up to read the rms-value of an AC voltage. The multimeter reads 10V. What is the amplitude of the AC voltage? Above all, show your calculation! Thanks and good luck! :)
2007-02-04 16:31:05 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
14.12
2007-02-04 17:25:22 · answer #1 · answered by Mesab123 6 · 0⤊ 0⤋
I assume you have a true-reading RMS voltmeter. Most voltmeters read the average value of the AC voltage and just have their displays calibrated as if the waveform was, in fact, a sine wave. You get in real trouble when you have SCR regulated circuits that deliver pieces of sine waves and the relationship between the average and RMS values of the waveform are different. This is especially nasty if you are generating heat, since the true RMS is the value you want for your measurement. Just a heads up.
2007-02-06 04:34:28 · answer #2 · answered by ZORCH 6 · 1⤊ 0⤋
If the RMS value of a sinusoidal wave is x, then the peak value is x sqrt(2). In this case, it would be 14.142 volts.
2007-02-05 00:34:29 · answer #3 · answered by Anonymous · 1⤊ 0⤋