What is the maximum instantaneous power that the resistance must withs

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The hair dryer operates at a power rating of 1700 W with an RMS voltage of 110 V. The peak voltage can be calculated as the square root of 2 times the RMS voltage. The resistance of the heating element is determined to be 7.12 ohms, with an RMS current of 15.45 A. To find the maximum instantaneous power, the formula used is instantaneous power equals voltage squared divided by resistance. This discussion highlights the calculations needed to determine the maximum instantaneous power in a resistive circuit.
lizaliiu
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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.
 
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hi lizaliiu! :smile:

hint: instantaneous power = V2/R :wink:
 

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