The resistance of an electrical toaster has a temperature dependence given by R(T) = R₀ [1 + α (T − T₀)] in its range of operation. At T₀ = 300 K, R = 100 Ω and at T = 500 K, R = 120 Ω. 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:

Current Electricity: JEE Main 2016 Physics question

JEE Main 2016 · 10 Apr, Morning shift · Q6420

JEE Main 201610 Apr, Morning shiftPhysicsHardCurrent Electricity150× since 2002

The resistance of an electrical toaster has a temperature dependence given by R(T) = R₀ [1 +

\alpha

(T − T₀)] in its range of operation. At T₀ = 300 K, R = 100

\Omega

and at T = 500 K, R = 120

\Omega

. 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 :

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