A tester is used to check the conduction of electricity through two liquids, labeled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that

(i) liquid A is a better conductor than liquid B.

(ii) liquid B is a better conductor than liquid A.

(iii) both liquids are equally conducting.

(iv) conducting properties of liquid cannot be compared in this manner.



Answer

The bulb in the tester will glow when the liquid is conducting.

Since bulb glows more brightly for liquid A, it means that it is a better conductor.

 

So, (i) liquid A is a better conductor than liquid B is correct

  1. Class 8
  2. Chapter 14 Class 8 - Chemical Effects Of Electric Current

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.