225 prompts matching "Adding resistance and reactance arithmetically instead of vectorially"
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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Let me explain: The voltmeter and how it is connected
I have just studied the voltmeter and how it is connected in my SS2 Physics class. Let me
Exam prep: Cells connected in series and in parallel
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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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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: 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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Let me explain: Earthing, and why an appliance is earthed
I have just studied earthing, and why an appliance is earthed in my SS2 Physics class. Let
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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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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Quiz: Oersted's experiment and what it showed
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Let me explain: The field pattern around a straight wire and around a coil
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Practice set: The electric bell and how it operates
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Exam prep: The relay and the telephone earpiece
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Physics at work: The loudspeaker, and how it turns current into sound
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