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23 Nov 2019

A 90 W light bulb operates on a potential difference of 80 V.
(a) Find the current in the bulb.
__ A
(b) Find the resistance of the bulb.
__ ohms
(c) If this bulb is replaced with one whose resistance is doublethe value found in part (b), how would the new power ratingcompare?
W(new bulb) / W(old bulb) = __

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Elin Hessel
Elin HesselLv2
22 Nov 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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