a) When she went away for the weekend, Celia left her TV on by mistake. The TV has a power rating of 200.0 W. She was away from 6 p.m. on Friday night until 9 p.m. on Sunday. How much energy did leaving the TV on use? Give your answer in kWh. b) If electricity costs 11.3 ¢per kWh, find out how much leaving the TV on costs her.

a) When she went away for the weekend, Celia left her TV on by mistake. The TV has a power rating of 200.0 W. She was away from 6 p.m. on Friday night until 9 p.m. on Sunday. How much energy did leaving the TV on use? Give your answer in kWh. b) If electricity costs 11.3 ¢per kWh, find out how much leaving the TV on costs her.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter22: Electric Current

Section: Chapter Questions

Problem 93A

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