Answers

2014-10-28T20:58:29+05:30
About electricity you can do take batteries and led bulbs and attach them together and show series connection and parallel connection and take 4 lemons attach together with copper and at end attach very small led bulb so that the bulb glows with light because of citric acid present in lemon 
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2014-10-28T22:26:11+05:30
Model making on electricity coservation, tranformation of solar energy into electric energy, electicity can be produced by salt water experiment.
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