What is the maximum instantaneous power that the resistance must withs

[lizaliiu]

1. A hair dryer has a power rating of 1700 W at 110 V rms. Assume the hair dryer circuit contains only resistance.



2. The peak voltage is sqrt2 * rms voltage.



3. I got my esistance of the heating element is 7.12ohm and the rms current drawn by the hair dryer is 15.45A. But I am not sure how to get the maximum instantaneous power.

 

[tiny-tim]

hi lizaliiu!

hint: instantaneous power = V²/R