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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 |
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Answer» Correct option 2. α and β are both positive Explanation: α and β are both positive |
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