The “ground” clip on an oscilloscope probe is electrically common with the metal chassis of the oscilloscope, which in turn is connected to earth ground by the three-prong (grounded) power plug.
Voltptp = 20 V , peak volt = 10 V
Tutorial question :
Consider the oscilloscope screen is shown below, the time/division knob is set at 2 milisecond/division. Calculate the period and frequency.
T = 0.011, f = 90.9 Hz)