RMS Current and Voltage Video Lessons

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Problem: A toaster oven is rated at 2000 W for operation at 120 V , 60 Hz . Part A Part complete What is the resistance of the oven heater element? Express your answer to two significant figures and include the appropriate units. R = 7.2 Ω Previous Answers Correct Part B Part complete What is the peak current through it? Express your answer to two significant figures and include the appropriate units. I0 = 24 A Previous Answers Correct Part C What is the peak power dissipated by the oven? Express your answer to two significant figures and include the appropriate units.

FREE Expert Solution

Power in circuits:

P=V2R

Peak current:

imax=VmaxR

Peak power:

Pmax=imaxVmax

Part A

From the equation for power, P = V2/R, we can get R as:

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Problem Details

A toaster oven is rated at 2000 W for operation at 120 V , 60 Hz . 

Part A Part complete What is the resistance of the oven heater element? Express your answer to two significant figures and include the appropriate units. R = 7.2 Ω Previous Answers Correct 

Part B Part complete What is the peak current through it? Express your answer to two significant figures and include the appropriate units. I0 = 24 A Previous Answers Correct 

Part C What is the peak power dissipated by the oven? Express your answer to two significant figures and include the appropriate units.

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