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DoScience is Project of Pakistan Science club

Offer free Hands-on Science Activities, DIY Project, Experiments Resources for Teacher and Students best Science club activities and award wining science fair projects.

Make a conductivity Tester

Make a conductivity Tester

Construction Of conductivity Tester Construction Of conductivity Tester

 This is video tutorial of building of conductivity tester for different materials

Material :

  • Thick copper wire
  • LED
  • AA size dry cell 2
  • Scotch Tape
  • Rubber Band
  • Cutter
  • Sand Paper
  • Pliers
  • Ruler

For construction steps watch Video.

Science of Conductivity Tester

A conductivity tester consist of two AA size dry cells connected in series, LED and two electrodes.

If sample is a good conductor, some amount of current will pass through the LED and it will light , Its better to insert resistance of 300 ohm to protect the LED from over current.

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