The power company attempts to hold, in the United States, the RMS value of the voltage supplied to households to 120 V RMS with ± 3 V at a frequency of 60 Hz. What is the peak-to-peak value of this...

The power company attempts to hold, in the United States, the RMS value of the voltage supplied to households to 120 V RMS with ± 3 V at a frequency of 60 Hz. What is the peak-to-peak value of this voltage? If we were to look at the PSD of this signal in a 10 Hz bandwidth, what amplitude would we see?