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Problem

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28 Nov 2021

Given information

The situation is given that there is a three way bulb is a bulb which can power at , and at the same voltage of . It has two filament obviously having different resistance, Let it be and .

 

Step-by-step explanation

Step 1.

We know that the power is inversely proportional to resistance and is given by as follow

 

It is clear that when the bulb is operated at , the filament in use having high resistance   

          

    

   

      

(Approx.)

 

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