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Thermal Properties Of Matter

Question
CBSEENPH11020456

A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

  • doubled

  • four times

  • one fourth

  • halved

Solution

A.

doubled

straight H space equals space fraction numerator straight V squared increment straight t over denominator straight R end fraction
straight H apostrophe space equals space space fraction numerator straight V squared over denominator straight R apostrophe end fraction. increment straight t
Given space straight R apostrophe space equals space straight R divided by 2