250 prompts matching "Why Nigerian mains is quoted as 220 volts"
Exam prep: Current in a metallic conductor and in an electrolyte
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Quiz: Potential difference, and how it differs from e.m.f.
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Worked example: Calculating the work done in moving a charge
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Exam prep: Cells connected in series and in parallel
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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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Let me explain: Potential difference across components joined in series
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Practice set: Solving a series circuit problem from end to end
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Quiz: Current in a parallel circuit
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Let me explain: Potential difference across components joined in parallel
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Practice set: Solving a parallel circuit problem from end to end
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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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Worked example: Choosing the right fuse rating for an appliance
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Practice set: The circuit breaker and how it works
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Exam prep: Electrical energy, power and the cost of consumption
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Quiz: Faraday's laws of electromagnetic induction
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Let me explain: Lenz's law and the direction of an induced current
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Worked example: Calculating an induced electromotive force
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Practice set: The factors affecting the size of an induced e.m.f.
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