250 prompts matching "The cathode ray and its properties"
Exam prep: The advantages and disadvantages of a series connection
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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
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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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Let me explain: Lenz's law and the direction of an induced current
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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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Let me explain: The field pattern around a straight wire and around a coil
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Worked example: The strength of an electromagnet and what affects it
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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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Worked example: Electrical safety and the cost of energy reviewed
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Exam prep: The simple d.c. motor and how it turns
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Spot my mistake: Confusing Fleming's left-hand rule with the right-hand rule
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Exam prep: Energy losses in a transformer, and how they are reduced
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Teach me: The structure of the atom and the particles in it
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Quiz: The Rutherford scattering experiment and what it showed
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Practice set: The Bohr model and electron energy levels
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