5 Questions
What is the purpose of the cathode ray tube (oscilloscope) according to the text?
To determine the amplitude, periodic time, and frequency of given waves
What is the pressure of the gas inside the cathode ray tube?
0.01 mmHg
What is the purpose of the deflecting system in the cathode ray tube?
To deflect the beam of electrons
What determines the position of the falling electrons on the screen of the cathode ray tube?
A bright spot
What is the purpose of the inner side of the wide end of the tube being coated with a layer of emulsion of carbon?
To carry electrons back to the cathode without accumulation of charge on the screen
Study Notes
Cathode Ray Tube (Oscilloscope)
- The purpose of the cathode ray tube is to display electrical signals visually.
Operating Conditions
- The gas inside the cathode ray tube is at a very low pressure, approximately 10^(-9) mmHg.
Deflecting System
- The deflecting system is responsible for directing the flow of electrons in a specific pattern on the screen, creating a visual representation of the input signal.
Electron Beam Positioning
- The position of the falling electrons on the screen is determined by the strength and direction of the electric and magnetic fields.
Tube Construction
- The inner side of the wide end of the tube is coated with a layer of emulsion of carbon to increase the efficiency of the cathode ray tube by reducing the reflection of electrons.
Test your knowledge of cathode ray tubes (oscilloscopes) with this quiz. Learn to determine wave amplitude, periodic time, and frequency, as well as how to sketch waves. Gain insights into the theory behind cathode ray tubes and their components.
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