A microwave has a power requirement of 1,264 W. A frozen dinner required 4.2 mins to heat on full power. How much electrical energy in kWh is used? If the cost of electricity is 11 cents per kWh how much does it cost to heat the dinner?

A microwave has a power requirement of 1,264 W. A frozen dinner required 4.2 mins to heat on full power. How much electrical energy in kWh is used? If the cost of electricity is 11 cents per kWh how much does it cost to heat the dinner?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter22: Electric Current

Section22.2: Using Electric Energy

Problem 28PP

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