Answers

2015-07-18T12:48:34+05:30
Heat is an energy that transforms work by this matter

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2015-07-18T12:54:11+05:30
Heating effects are
 According to joule's law of heating 
   heat α current²
   heat α resistance
   heat α time
therefore heat produced, H=I²Rt, where t stands for time, for which current I is passed through the conductor.  
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