b. which functional area controls the amplitude?\na input\nb display\nc vertical\nd horizontal

b. which functional area controls the amplitude?\na input\nb display\nc vertical\nd horizontal

b. which functional area controls the amplitude?\na input\nb display\nc vertical\nd horizontal

Answer

Brief Explanations:

In an oscilloscope or similar equipment, the vertical - axis controls the amplitude of the signal being displayed. The input is where the signal enters, the display is for showing the signal, and the horizontal controls time - related aspects.

Answer:

C. Vertical