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10. A 2 kW kettle containing 1.7 litres of tap water at 15°C is plugged in to the mains (220 V). The electricity tariff is currently 35c per kW h. Calculate: a) the strength of the current drawn by the kettle: b) the amount of energy required to "boil the kettle"; c) how many minutes it takes to boil the water;

10. A 2 kW kettle containing 1.7 litres of tap water at 15°C is plugged in to the mains (220 V). The electricity tariff is currently 35c per kW h. Calculate: a) the strength of the current drawn by the kettle: b) the amount of energy required to "boil the kettle"; c) how many minutes it takes to boil the water;

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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10. A 2 kW kettle containing 1.7 litres of tap water at 15°C is plugged in to the mains (220 V). The electricity tariff is currently 35c per kW h. Calculate: a) the strength of the current drawn by the kettle: b) the amount of energy required to "boil the kettle"; c) how many minutes it takes to boil the water; d) the cost of bringing the water to the boil.
Transcribed Image Text:10. A 2 kW kettle containing 1.7 litres of tap water at 15°C is plugged in to the mains (220 V). The electricity tariff is currently 35c per kW h. Calculate: a) the strength of the current drawn by the kettle: b) the amount of energy required to "boil the kettle"; c) how many minutes it takes to boil the water; d) the cost of bringing the water to the boil.
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