Questions
The energy supply being cut-off, an electric heater element cools down to the temperature of its surroundings, but it will not cool further because
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a
supply is cut off
b
it is made of metal
c
surroundings are radiating
d
element and surroundings have the same temperature
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Correct option is D
When element and surrounding have the same temperature. There will be no temperature difference, hence heat will not flow from the filament and its temperature remains constant.Similar Questions
A calorimeter of mass 0.2 kg and specific heat 900 Containing 0.5 kg of a liquid of specific heat 2400J/kg/K. Its temperature falls from
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