229 prompts matching "Flux density inside a solenoid from turns, length and current"
Exam prep: Calculating frequency and wavelength from the wave speed
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Spot my mistake: Magnetic flux and magnetic flux density
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Exam prep: The frequency, wavelength and amplitude of a sound wave
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Exam prep: The field around a solenoid and the right-hand grip rule
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Worked example: Calculating charge from current and time
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Quiz: Potential difference, and how it differs from e.m.f.
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Worked example: Calculating resistance from voltage and current
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Spot my mistake: Overloading a socket, and what follows from it
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Physics at work: The loudspeaker, and how it turns current into sound
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Exam prep: The simple d.c. motor and how it turns
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Worked example: Calculating output voltage from the turns ratio
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Quiz: The decay curve, and reading a half-life from it
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Quiz: Rectilinear propagation and the formation of shadows
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Practice set: Refraction of light and the change of speed between media
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Spot my mistake: When light is reflected wholly back inside a denser medium
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Real-life Nigeria: Dispersion of white light and the spectrum it produces
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Quiz: Defects of vision and the lenses that correct them
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Quiz: Radio waves and microwaves and their uses
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Real-life Nigeria: Radio and television broadcasting in Nigeria
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Practice set: Pitch, loudness and quality as properties of a musical note
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