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

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo