During a cold winter night in Boston, a family uses a 1500 W electric space heater with an applied voltage of 110 V to keep warm for 8 hours. Determine the electrical current drawn by the heater, in Amps, and total amount of energy supplied to the heater by electrical work, in kW.h. If electric power is valued at $0.08/ kW.h, determine the cost of operation for the night.

During a cold winter night in Boston, a family uses a 1500 W electric space heater with an applied voltage of 110 V to keep warm for 8 hours. Determine the electrical current drawn by the heater, in Amps, and total amount of energy supplied to the heater by electrical work, in kW.h. If electric power is valued at $0.08/ kW.h, determine the cost of operation for the night.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

B) During a cold winter night in Boston, a family uses a 1500 W electric space heater with
an applied voltage of 110 V to keep warm for 8 hours. Determine the electrical current
drawn by the heater, in Amps, and total amount of energy supplied to the heater by
electrical work, in kW.h. If electric power is valued at $0.08/ kW-h, determine the cost of
operation for the night.

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