A tester is used to check the conduction of electricity through two liquids, labelled 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. Out of the following, which one conclusion can be drawn?
Answer & explanation
Correct answer: option 1
The correct answer is option 1. Liquid A is a better conductor than Liquid B.
The observation that the bulb of the tester glows brightly for liquid A and very dimly for liquid B suggests that there is a difference in the electrical conductivity of the two liquids. Let's break down the possible conclusions:
1. Liquid A is a better conductor than Liquid B:
The bright glow of the tester bulb for liquid A indicates that it allows a significant flow of electric current through it. This suggests that liquid A has a higher electrical conductivity compared to liquid B.
2. Liquid B is a better conductor than Liquid A:
The very dim glow of the tester bulb for liquid B suggests that it allows only a small amount of electric current to pass through. This implies that liquid B has lower electrical conductivity compared to liquid A.
3. Both liquids are equally conducting:
This conclusion is not consistent with the observation. If both liquids were equally conducting, the tester bulb would show a similar brightness for both.
4. Conducting properties of liquid cannot be compared in this manner:
While it is true that the specific conductivity values might not be obtained from this simple test, the qualitative observation does indicate a difference in conductivity between the two liquids.
Given the observations, the most reasonable conclusion is that Liquid A is a better conductor than Liquid B. The varying brightness of the tester bulb suggests differences in the ability of the liquids to conduct electricity.