A toaster oven has a resistive heating element. The average rate at which it dis

Question

A toaster oven has a resistive heating element. The average rate at which it dissipates energy as thermal energy is 1.00 kW. In the United States, emf amplitude in household circuits is Emax = 170 V and the AC oscillation rate is 60 Hz.

Part A

What is the root-mean-square current through the heating element?

Express your answer with the appropriate units.

4.16A

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A toaster oven has a resistive heating element. The average rate at which it dissipates energy as thermal energy is 1.00 kW. In the United States, emf amplitude in household circuits is Emax = 170 V and the AC oscillation rate is 60 Hz.

Part A

What is the root-mean-square current through the heating element?

Express your answer with the appropriate units.

4.16A

SubmitMy AnswersGive Up

Incorrect; Try Again; 5 at

Explanation / Answer

P = Vrms*Irms

Vrms = Vmax/1.414 = 170/1.414 = 120.22 V

Irms = P/Vrms = 1000/120.22 = 8.31 A

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