221 prompts matching "Efficiency, and why no machine is perfect"
Worked example: The strength of an electromagnet and what affects it
Act as my SS2 Physics tutor. Show me a full worked example on the strength of an electroma
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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Let me explain: Series and parallel circuits reviewed
I have just studied series and parallel circuits reviewed in my SS2 Physics class. Let me
Worked example: Electrical safety and the cost of energy reviewed
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Spot my mistake: The errors most often made in second-term SS2 Physics
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Real-life Nigeria: Preparing a revision plan for the SS2 second term
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Quiz: Fleming's left-hand rule
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Exam prep: The simple d.c. motor and how it turns
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Real-life Nigeria: Electric motors in Nigerian homes and industry
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Quiz: The structure of a transformer and its two coils
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Let me explain: Step-up and step-down transformers
I have just studied step-up and step-down transformers in my SS2 Physics class. Let me exp
Exam prep: Energy losses in a transformer, and how they are reduced
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Spot my mistake: Assuming a transformer can work on direct current
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Real-life Nigeria: Transformers in Nigeria's power transmission network
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Quiz: The Rutherford scattering experiment and what it showed
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Worked example: Writing the nuclide notation for a given atom
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Practice set: The Bohr model and electron energy levels
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Spot my mistake: Confusing atomic number with mass number
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