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Get Full Access to Physics - 4 Edition - Chapter 21 - Problem 32
Get Full Access to Physics - 4 Edition - Chapter 21 - Problem 32

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# A 75-W lightbulb operates on a potential difference of 95

ISBN: 9780321611116 152

## Solution for problem 32 Chapter 21

Physics | 4th Edition

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Problem 32

A 75-W lightbulb operates on a potential difference of 95 V. Find (a)the current in the bulb and (b)the resistance of the bulb. (c) If this bulb is replaced with one whose resistance is half the value found in part (b), is its power rating greater than or less than 75 W? By what factor?

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Tuesday,January31st Sidenote:Gyaisanabbreviationforabill ionyears.So12Gya=12billion • Funfact!Whenyoulookatthesun,you'reseeingitasitwasabout8minutesago o Ittakestimeforlighttotraveltous • Thesun,supernovas,andstarsallappeartousastheywereinthepast • Thingsfartherawaytakelongertotravel,soweseethemastheywerebillionsof yearsago • Wecanlookupto13billionyearsinthepast,beforethatweseecosmicbackground butnosupernovasorgalaxies o Intermsoftheexpandinguniverse • Wecanlookbackandseewhathappene daftertheBigBangabout13.7billionsyears • Loo

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