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Question

If magnetic needle does not deflect, and LED or bulb also does not glow while testing a solution for electrical conductivity, it might imply:


  1. Solution is an insulator 

  2. Solution is a poor conductor 

  3. The circuit is broken 

  4. All of the above 


Solution

The correct option is D

All of the above 


If none of the testers work, all of the above might be the reasons for this.

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