3) An incandescent lamp has an internal resistance of 96 92 and operates at 120 V. a) How much current will run through this lamp? b) How much power does this lamp draw? c) If this lamp operates for 180 minutes per day, every day of the year, how much energy (in kWh) does it use in a year? d) If electricity rates are 8 cents per kWh, how much does it cost annually to operate this lamp?

3) An incandescent lamp has an internal resistance of 96 92 and operates at 120 V. a) How much current will run through this lamp? b) How much power does this lamp draw? c) If this lamp operates for 180 minutes per day, every day of the year, how much energy (in kWh) does it use in a year? d) If electricity rates are 8 cents per kWh, how much does it cost annually to operate this lamp?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter13: Heating Control Devices

Section: Chapter Questions

Problem 28RQ

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