Boojho and Paheli performed experiments taking similar bulbs and cells but two different solutions A and B as shown in Fig.14.1.
They found that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that
it is found that bulb in circuit in setup A glows more brightly than the bulb in circuit in setup B. This happens because there is more heating in the filament in setup A than B.
more heating occurs due to high current flowing through A. Hence solution A is better conductor than solution B.