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Heating Effect of Current

For a given c...

Question

For a given current and resistance,what is the change in the heat produced if the time for which current flows through a conductor is, a)tripled b)one-third time of the original?

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Solution

$H e a t i s g i v e n b y : H = I^{2} R t W h e n I a n d R i s c o n s \tan t, h e a t i s d i r e c t l y p r o p o r t i o n a l t o t h e t i m e . W H e n t i m e i s t r i p p l e d, H e a t p r o d u c e d b e c o m e s t r i p p l e d . W h e n t i m e b e c o m e s 1 / 3, h e a t p r o d u c e d b e c o m e s 1 / 3 .$

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