Question 1208726
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Heat generated by a stove element varies directly as the cube of the voltage and inversely as the resistance. 
If the voltage remains constant, what needs to be done to triple the amount of the heat generated?
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The formula described in your post,  is  FATALLY  INCORRECT.


        It  CONTRADICTS  to  BASIC  Physics laws.



The correct formula is  THIS   (the  Joule's law in  Physics)


        The formula for heat generated by electrical resistance per unit of time,  using voltage  (V)  and resistance  (R), 

        is H = (V^2/R),  where  H  is the heat generated,  V  is the voltage,  R  is the resistance. 



Do not disseminate wrong information in the  Internet.



Your professor  (if exists),  who created the formulation in the post, does not know the basics of  Science.



        Note:  I specially wrote  " if exists "  in my post,  since  I  99%  sure 

        that such a  " professor "  does not exist in the nature.



        Because if such a professor existed, 

        he (or she) would have been kicked out from everywhere long time ago 

        for his or her  TOTAL  and  GLOBAL  illiteracy.



This  " problem "  is a  FAKE.



It does not require to be solved.


It requires to be thrown to the closest garbage bin.



        And a serious categorical warning should be issued to the author for creating 

        and disseminating in the Internet  " problems "  in areas where he/she does understand NOTHING.