A three-way lightbulb can produce 50 W, 100 W, or 150 W, at 120 V. Such a

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A three-way lightbulb can produce 50 W, 100 W, or 150 W, at 120 V. Such a bulb contains two filaments what can be connected to the 120V individually or in parallel.
(a) Describe how the connections to the two filaments are made to five each of the three wattages.
(b) What must be the resistance of each filament?
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Fundamentals of Physics

ISBN: 978-0471758013

8th Extended edition

Authors: Jearl Walker, Halliday Resnick

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