Name two different physical quantities that can be mesasured

Name two different physical quantities that can be mesasured direatly with an oscilloscope. What cause the spot on the screen of an oscilloscope? Many different quantities, such as heart rate, temperature, pressure, speed, etc., can be visvalized with the help of an oscilloscope. Before one can see any phenomenon on an oscilloscope, it must be converted into ______________(Fill in the blank.) If the peak-to-peak voltage. v_pp read with an oscilloscope is 5.00 V for a sine wave, calculate V_max and v_min. What value will be read by an ac voltmeter when measuring the same sine wave?

Solution

a)

We can measure the voltage and period of a wave from an oscilloscope

b)

The limited refresh rate of the oscilloscope causes the spots on the screen

c)

They must be converted to : electrical signal

d)

Vpp = 5 V

So, Vmax = 5/2 = 2.5 V

Vrms = Vmax/sqrt(2) = 2.5/sqrt(2) = 1.77 V