How to make a battery powered electric torch at home (with switch)

How to make a battery powered electric torch at home (with switch)
  Arnav Agrawal
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How to make a battery powered electric torch at home (with switch) In this video an electric torch is shown which runs on a  ...  is made by cutting a bottle's  ...  I put a LED bulb which is surrounded by aluminum foil for better reflectin

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