250 prompts matching "The magnetic field in an electric bell and a relay"
Let me explain: Sound, its nature and its applications reviewed
I have just studied sound, its nature and its applications reviewed in my SS2 Physics clas
Quiz: Charging by friction, by contact and by induction
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Worked example: Coulomb's law and the force between two charges
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Practice set: Conductors, insulators and semiconductors
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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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Worked example: Calculating charge from current and time
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Exam prep: Current in a metallic conductor and in an electrolyte
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Exam prep: Cells connected in series and in parallel
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Worked example: Calculating resistance from voltage and current
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Practice set: The ohmic conductor and the non-ohmic conductor
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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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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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Practice set: The circuit breaker and how it works
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Spot my mistake: Overloading a socket, and what follows from it
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Practice set: The factors affecting the size of an induced e.m.f.
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Exam prep: The a.c. generator and how it works
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Spot my mistake: The d.c. generator and the commutator
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