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From Karnataka Open Educational Resources
→Activity No 1
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* '''Multimedia resources'''
* '''Multimedia resources'''
* '''Website interactives/ links/ simulations'''
* '''Website interactives/ links/ simulations'''
−* '''Process (How to do the activity)'''
+* '''Process (How to do the activity)'''<br>
+{{#widget:YouTube|id=B5_t45V8z1A}}
take 20cm of thin copper wire, winding it on a pen refill, and carefully take out to make it like a spring<br>
take 20cm of thin copper wire, winding it on a pen refill, and carefully take out to make it like a spring<br>
connect the copper spring to 3 volt electric source, record the temperatures of after 5 minutes and 10 minutes<br>
connect the copper spring to 3 volt electric source, record the temperatures of after 5 minutes and 10 minutes<br>
