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Question:
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. 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:
(i) liquid A is a better conductor than liquid B.
The bulb glows brighter in liquid A as compared to liquid B, which means the amount of current passing through bulb A is more. The amount of current passing through a solution depends on its conductivity. With more conductivity, more current will pass. Hence, liquid A is a better conductor than liquid B.
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