214 prompts matching "Why solids, liquids and gases expand when heated"
Quiz: Optical instruments and the electromagnetic spectrum reviewed
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Quiz: Charging by friction, by contact and by induction
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Spot my mistake: Lightning and the lightning conductor
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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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Spot my mistake: Primary cells and secondary cells compared
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Quiz: Ohm's law and how it is stated
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Quiz: The fuse and how it protects a circuit
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Spot my mistake: Overloading a socket, and what follows from it
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Spot my mistake: The d.c. generator and the commutator
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Quiz: Oersted's experiment and what it showed
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Quiz: Resistance and Ohm's law reviewed
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Quiz: Fleming's left-hand rule
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Spot my mistake: Confusing Fleming's left-hand rule with the right-hand rule
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Quiz: The structure of a transformer and its two coils
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Physics at work: Why electricity is transmitted at high voltage
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Quiz: The Rutherford scattering experiment and what it showed
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Quiz: Telling alpha, beta and gamma radiation apart
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Spot my mistake: Background radiation, and allowing for it
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Quiz: The decay curve, and reading a half-life from it
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