Using the "conduction tester" on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.



  • When the free end of a conductor tester is touched with an object , then the bulb of the tester glows if the object conducts electricity.
  • The bulb does not glow if the object does not conduct electricity.
  • Since the bulb glows when the tester is touched with the object, the object must conduct electricity. Hence, the object is a conductor .
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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo