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Physics Review Question Unit: Electricity and Magnetism Year: 1996 Question#: 35 Question: Electromagnetic waves can be generated by accellerating: (1 ) a hydrogen atom (2 ) a photon (3 ) a neutron (4 ) an electron What is this question really asking? Explanation by: Tony S. [ Return to question menu ] Answer 1 a hydrogen atom INCORRECT This is incorrect because electromagnetic waves can only be produced if the "thing" being accelerated is a charged (negative) particle. They hyrdogen atom is not a charged particle. return to top Answer 2 a photon INCORRECT This like the previous question is wrong because the photon is not a charged (negative) particle. If the particle is not charged and mobile, there will be no electromagnetic wave produced. return to top Answer 3 a neutron INCORRECT This is VERY incorrect because the neutron has no charge at all. Without a charge in a moving "thing" there can be no electromagnetic wave produced. return to top Answer 4 an electron CORRECT!! This is correct because the electron is a negatively charged particle that can be accelerated. Since this is true, a electromagnetic field can be produced. return to top What's this question really asking? It is asking whether or not you understand the fundamental theory of ELECTRON movement (electricity) and magnetism (a moving charged particle). You need to have a "small idea" of what each of the other items is as well. return to top |
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