250 prompts matching "Physics at work: Telecommunications"
Exam prep: Electrical energy, power and the cost of consumption
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Practice set: The factors affecting the size of an induced e.m.f.
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Exam prep: The relay and the telephone earpiece
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Spot my mistake: The moving-coil galvanometer
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Practice set: Electromagnetic induction reviewed
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Exam prep: The magnetic effect of an electric current reviewed
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Practice set: The force between two parallel current-carrying conductors
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Exam prep: The simple d.c. motor and how it turns
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Spot my mistake: Confusing Fleming's left-hand rule with the right-hand rule
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Practice set: The efficiency of a transformer
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Exam prep: Energy losses in a transformer, and how they are reduced
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Practice set: The Bohr model and electron energy levels
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Practice set: The decay constant and the activity of a source
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Spot my mistake: Assuming a sample decays completely after two half-lives
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Spot my mistake: The greenhouse effect and the ozone layer
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Practice set: Moons, asteroids and comets
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Exam prep: The origin of the solar system and the theories about it
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Exam prep: The sun as a typical star
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Spot my mistake: White dwarfs, neutron stars and black holes
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Practice set: The Big Bang theory and the evidence for it
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