Calculate AC Circuit Power: Toaster 3A, 240V, 50Hz

[frozen7]

An electric toaster draws 3A rms current from a 240V, 50Hz source. Calculate the average power and peak value of the instantaneous power to the toaster.

$$P(average) = I (rms) x V (rms) cos \phi$$

Since the power factor is not mentioned in the question. Can the question be solved?

 

[berkeman]

If the power factor isn't given, it probably isn't needed. What would you guess the power factor of a toaster to be? What is the heating mechanism?

 

[frozen7]

Is it because all the energy become heat so the power factor is equal to one ?

 

[berkeman]

Yeah. The heating element is purely resistive, and the power factor of a resistive circuit is unity. You only get a phase shift between the applied voltage and resulting current if the load is reactive.