JEE Main 2016 Physics question
The resistance of an electrical toaster has a temperature dependence given by in its range of operation. At K, and at K, . The toaster is connected to a voltage source at 200 V and its temperature is raised at a constant rate from 300 to 500 K in 30 s. The total work done in raising the temperature is :
Answer: (1)
Solution
First find . At K, , so and K. The temperature rises uniformly, , so at time
R(t) = 100[1 + ยท] = 100[1+].
The instantaneous powe
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