250 prompts matching "Photocells in automatic doors and light meters"
Exam prep: Magnetism and magnetic fields reviewed
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Spot my mistake: The errors most often made in first-term SS2 Physics
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Physics at work: Preparing a revision plan for the SS2 first term
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Worked example: Coulomb's law and the force between two charges
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Exam prep: The unit of charge and the quantisation of charge
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Teach me: What electric current is, and how it is measured
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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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Physics at work: Electromotive force in Nigerian power generation
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Teach me: What resistance is, and what it depends on
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Quiz: Ohm's law and how it is stated
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Practice set: The ohmic conductor and the non-ohmic conductor
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Quiz: Current in a series circuit
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Practice set: Solving a series circuit problem from end to end
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Exam prep: The advantages and disadvantages of a series connection
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Spot my mistake: Adding resistances wrongly in a series problem
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Quiz: Current in a parallel circuit
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Practice set: Solving a parallel circuit problem from end to end
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Spot my mistake: Inverting the reciprocal wrongly in a parallel calculation
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