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[" The resistance of an electrical toast...

[" The resistance of an electrical toaster has a temperature dependence given by "R(T)=R_(0)[1+alpha(T-T_(0))]],[" in its range of operation.At "T_(0)=300K,R=100Omega" and at "T=500K,R=120Omega" .The toaster is "],[" connected to a voltage source at "200V" and its temperature is raised at a constant rate from "300" to "],[500K" in "30s" .The total work done in raising the temperature is :- [JEE-Main (Online) "2016]],[" (1) "400ln(1.5)/(1.3)Jquad (2)300Jquad " (3) "400ln(5)/(6)Jquad " (4) "200ln(2)/(3)J]

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