The question is: In CRO, electrons are emitted from:
Correct answer: B. Cathode
- A. Filament
- B. Cathode
- C. Anode
- D. Electron Gun
Explanation
In a Cathode Ray Oscilloscope (CRO), electrons are emitted from the cathode. The cathode is heated, causing it to emit electrons through a process called thermionic emission. These electrons are then accelerated towards the anode or electron gun within the CRO tube. So, the correct answer to your question would be b) Cathode.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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