alleryIn older cathode-ray tube televisions, an electromagnet guides which particles to the screen?
AProtons
BElectrons
CNeutrons
DAtoms of gas
Answer & Solution
Correct answer: B. Electrons
1. A cathode-ray tube fires a beam at the screen.
2. An electromagnet steers the beam.
3. The beam is made of electrons.
_Source: Wikipedia, Magnet, Common uses_
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