250 prompts matching "Let me explain: Why a.c. is described by an r.m.s. rather than an average value"
Quiz: Magnetic field lines and their properties
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Exam prep: The field around a solenoid and the right-hand grip rule
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Quiz: Conventional current and electron flow
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Quiz: Potential difference, and how it differs from e.m.f.
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Exam prep: Cells connected in series and in parallel
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Exam prep: Combining series and parallel sections in one circuit
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Quiz: The fuse and how it protects a circuit
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Exam prep: Electrical energy, power and the cost of consumption
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Exam prep: The a.c. generator and how it works
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Exam prep: The relay and the telephone earpiece
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Exam prep: The magnetic effect of an electric current reviewed
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Quiz: Fleming's left-hand rule
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Exam prep: The simple d.c. motor and how it turns
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Quiz: Telling alpha, beta and gamma radiation apart
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Exam prep: The cloud chamber and the photographic plate as detectors
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Quiz: The decay curve, and reading a half-life from it
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Exam prep: Carbon dating and how it works
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Quiz: The earth's atmosphere and the layers within it
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Exam prep: The earth's gravitational field and its effects
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Quiz: The planets and the order in which they orbit
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