217 prompts matching "Assuming a machine can be one hundred per cent efficient"
Real-life Nigeria: The electromagnet and the uses it is put to
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Let me explain: Sound, its nature and its applications reviewed
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Exam prep: Magnetism and magnetic fields reviewed
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Real-life Nigeria: Linking waves, sound and light together
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Let me explain: The gold-leaf electroscope and the uses it is put to
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Exam prep: The unit of charge and the quantisation of charge
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Real-life Nigeria: Static electricity in Nigerian daily life
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Let me explain: The ammeter and how it is connected
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Exam prep: Current in a metallic conductor and in an electrolyte
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Real-life Nigeria: Measuring the current in a Nigerian household circuit
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Let me explain: The voltmeter and how it is connected
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Exam prep: Cells connected in series and in parallel
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Real-life Nigeria: The maintenance and charging of a car battery
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Let me explain: Resistivity and the factors affecting resistance
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Exam prep: Measuring resistance with a metre bridge or a potentiometer
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Real-life Nigeria: Resistors and rheostats in practical circuits
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Exam prep: The advantages and disadvantages of a series connection
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Real-life Nigeria: Series circuits in Nigerian decorative lighting
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Real-life Nigeria: Why house wiring uses parallel connection
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Let me explain: Earthing, and why an appliance is earthed
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