250 prompts matching "The magnetic field in an electric bell and a relay"
Quiz: Magnetic field lines and their properties
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Let me explain: The earth's magnetic field and what causes it
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Teach me: The magnetic field produced by an electric current
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Exam prep: The earth's magnetic field and the compass
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Practice set: The electric bell and how it operates
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Quiz: Optical instruments and the electromagnetic spectrum reviewed
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Teach me: What electric charge is, and the two kinds of it
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Let me explain: The field pattern around a straight wire and around a coil
I have just studied the field pattern around a straight wire and around a coil in my SS2 P
Teach me: What a magnetic field is and how it is represented
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Exam prep: Magnetism and magnetic fields reviewed
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Exam prep: The magnetic effect of an electric current reviewed
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Teach me: The force on a conductor carrying current in a magnetic field
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Teach me: What the electromagnetic spectrum is, and how it is ordered
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Physics at work: The range of human hearing, and ultrasound beyond it
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Teach me: Magnets, magnetic poles and the law of magnetic forces
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Worked example: Magnetic induction and how it works
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Spot my mistake: Magnetic screening and how it is achieved
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Exam prep: The field around a solenoid and the right-hand grip rule
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Teach me: The dangers of electricity in the home
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Exam prep: Electrical energy, power and the cost of consumption
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