Answered: If a lamp has resistance of 120 W when…

If a lamp has resistance of 120 W when it operates at 100 W, what is the applied voltage? a. 110 V b. 120 V c. 125 V d. 220 V

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 57PQ

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Question

If a lamp has resistance of 120 W when it operates at 100 W, what is the applied voltage?

a. 110 V

b. 120 V

c. 125 V

d. 220 V

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