Physics-Grade 9-Chapter 4- DC Voltage- MCQ 4- The oscillioscope
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Set A: For questions 1 to 4, use the following paragraph
An oscilloscope is used to study the voltage across the terminals of a generator.
The adjacent document shows the corresponding connection and the screen of the oscilloscope.
Terminal M of the oscilloscope is:CorrectIncorrect
The oscilloscope is reading voltage:CorrectIncorrect
The vertical sensitivity is 20V/div. The voltage displayed on the screen of the oscilloscope is:CorrectIncorrect
If the terminals of the oscilloscope are interchanged, then the luminous line…:CorrectIncorrect
Set B: For questions 5 to 8, refer to the following paragraph:
The circuit shown in the adjacent figure is composed of a DC generator, a switch, a motor, and three identical lamps. The dry cell maintains a constant voltage UPN = 20V, the motor uses 12V to function normally while lamp (L1) takes 3V. An oscilloscope is connected across lamp (L3) to study the voltage across its terminals. The vertical scale is chosen to be 2V/div.
The voltage across lamp (L2) is:CorrectIncorrect
The voltage across lamp (L3) is 5V. We can prove this using:CorrectIncorrect
The oscilloscope measures the voltage:CorrectIncorrect
The luminous line appears at:CorrectIncorrect