Cathode ray oscilloscope works by deflecting a beam of:
Correct answer: B. Electrons
- A. Positrons
- B. Electrons
- C. Protons
- D. Both electrons and protons
Explanation
Electrons are negatively charged subatomic particles that are emitted from the cathode (negative electrode) of the cathode ray tube (CRT) in a CRO. These electrons are accelerated and focused into a narrow beam, which is then deflected by electric and magnetic fields to produce the visual display on the screen of the oscilloscope.
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About Electromagnetism
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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