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A tester is dipped into two liquids A and B. The bulb glows BRIGHTLY for A and DIMLY for B. The correct conclusion is:
AConducting properties cannot be compared this way
BBoth are equally conducting
CLiquid B is a better conductor than liquid A
DLiquid A is a better conductor than liquid B
Answer & Solution
Correct answer: D. Liquid A is a better conductor than liquid B
A brighter bulb means more current is flowing through the circuit, which means the liquid offers less resistance — i.e. it conducts electricity better. So A is the better conductor.
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