What is the maximum instantaneous power that the resistance must withs

In summary, the maximum instantaneous power that a resistance must withstand is the highest amount of power that can flow through the resistance at any given moment. This power is determined by the physical properties of the resistance, such as size, material, and temperature rating. It is important to know this limit in order to prevent damage to the resistance and ensure safety. The maximum instantaneous power can be calculated by multiplying the square of the current by the resistance value. It is also important to note that this limit can change over time due to factors like aging and environmental conditions.
  • #1
lizaliiu
7
0
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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  • #2
hi lizaliiu! :smile:

hint: instantaneous power = V2/R :wink:
 

What is the maximum instantaneous power that the resistance must withstand?

The maximum instantaneous power that a resistance must withstand is the highest amount of power that can flow through the resistance at any given moment.

What factors determine the maximum instantaneous power that a resistance can handle?

The maximum instantaneous power that a resistance can handle is determined by its physical properties, such as its size, material, and temperature rating.

Why is it important to know the maximum instantaneous power that a resistance can handle?

Knowing the maximum instantaneous power that a resistance can handle is important because exceeding this limit can cause damage to the resistance and potentially create safety hazards.

How can the maximum instantaneous power of a resistance be calculated?

The maximum instantaneous power of a resistance can be calculated by multiplying the square of the current flowing through the resistance by its resistance value.

Can the maximum instantaneous power of a resistance change over time?

Yes, the maximum instantaneous power of a resistance can change over time due to factors such as aging, wear and tear, and changes in environmental conditions.

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