Physics-Grade 9-Chapter 4- DC Voltage- MCQ 4- The oscillioscope

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:

The oscilloscope is reading voltage:

The vertical sensitivity is 20V/div. The voltage displayed on the screen of the oscilloscope is:

If the terminals of the oscilloscope are interchanged, then the luminous line…:

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 U_PN = 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:

The voltage across lamp (L3) is 5V. We can prove this using:

The oscilloscope measures the voltage:

The luminous line appears at: