What current is used by the 220 V AC electric heater which heats 2 kg of water (c = 4200 J/(kg K)) from 20°C to 100°C for 10 min, assuming 80% efficiency?

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter21: Current And Direct Current Circuits
Section: Chapter Questions
Problem 19P
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What current is used by the 220 V AC electric heater which heats 2 kg of water (c = 4200 J/(kg K)) from 20°C to 100°C for 10 min, assuming 80% efficiency?
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