Answer: A flashlight can be made that is powered by the

Chapter , Problem 70

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A flashlight can be made that is powered by the inducedcurrent from a magnet moving through a coil of wire. Thecoil and magnet are inside a plastic tube that can be shakencausing the magnet to move back and forth through the coil.Assume the magnet has a maximum field strength of 0.05 T.Make reasonable assumptions and specify the size of thecoil and the number o f turns necessary to ligh t a standard1-watt, 3-V flashlight bulb.

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