Question

While making a tester to detect electric currents through liquids, Ritika replaced the cell (used in tester to detect currents through metals) with a battery because

• A. cell gives greater power and gets discharged very quickly with liquids
• B. cell might fuse when used with liquids as liquids are very highly conducting and produce large amounts of current
• C. battery has safety features
• D. battery gives greater power and will produce measurable current with liquids which usually are not as good conductors as metals

Answer 1

The correct option is D

battery gives greater power and will produce measurable current with liquids which usually are not as good conductors as metals

Liquids are, in general, poor conductors than metals and with a cell they might produce weak currents to light up a bulb or LED. So, instead of a cell, a battery is used.