You want to use the idea of electromagnetic induction to make the bulb in your small...

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You want to use the idea of electromagnetic induction to make the bulb in your small...

You want to use the idea of electromagnetic induction to make the bulb in your small flashlight glow; it glows when the potential difference across it is 1.5 V. You have a small bar magnet and a coil with 100 turns, each with area 2.9

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Answer 1

Answer #1

Faraday's Law.

Voltage induced = # turns x area of coil x dB / dt

solve for dt,

v = 4cm / dt = 80 m/s

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Answer 2

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