Question

The energy supply being cut-off, an electric heater element cools down to the temperature of its surrounding, but it will not cool further because
A. supply is cut off
B. it is made of metal
C. surroundings are radiating
D. element and surroundings have the same temperature.

Answer 1

Correct Answer - D
When element and surrounding have the same temperature. There will be no temperature difference, hence, heat will not flow from the filaments and its temperature remains constant.