1.

The resistance Rt of a conductor varies with temperature t as shown in the figure. If the variation is represented by R = Rt = R0 [1 + αt + βt2] , then 1.  α and β are both negative 2.  α and  β are both positive  3.  α is positive and β is negative 4.  α is negative and  β is positive

Answer»

Correct option  2.  α and β  are both positive  

Explanation:

α  and β are both positive  



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